Tools starting with C

C2PA Content Credentials Structure Inspector

Inspect bounded local JPEG, PNG, BMFF, and standalone JUMBF files for observable C2PA container structure without claiming cryptographic verification or authenticity.

CAC Calculator

Calculate Customer Acquisition Cost across marketing channels, compare channel efficiency, and track LTV:CAC ratio in real time.

Cache Hit Ratio Calculator

Compute cache hit ratio, backend load reduction and effective latency (AMAT) from hit and miss counts and latencies.

Caddyfile Generator

Build a Caddy v2 Caddyfile with automatic HTTPS, reverse proxy or file server, compression, headers and logging.

Caffeine Cutoff Time Calculator

Find the latest time to drink coffee using caffeine half-life decay, your bedtime and the residual dose you are willing to sleep on.

Caffeine Intake Tracker

Log every coffee, tea, and energy drink, watch caffeine decay in your body, and get a last-cup cutoff for better sleep.

CAGR Calculator

Work out compound annual growth rate from a start value, end value and duration, with absolute return and a year-wise breakdown.

Calcium Intake Calculator For Women

Daily calcium and vitamin D targets by life stage, plus a food tally showing how close your day actually gets.

Calendar Privacy Scrubber

Scrub names, emails, locations, notes, meeting links, alarms and identifiers from ICS calendars locally before sharing.

Calender Panchang

Compute tithi, nakshatra, yoga, karana, sunrise, sunset, Rahu Kaal and Abhijit Muhurta for any date and place, from the NOAA solar algorithm and the Meeus lunar series with the Lahiri ayanamsa.

Calibrated Camera Ruler

Measure an object from a photo by calibrating against something of known size — a bank card, an A4 sheet, a coin — with the error range shown.

Calibration Curve LOD/LOQ Workbench

Enter calibration points to compute the linear fit, residuals, and R², then derive the LOD and LOQ.

Call-to-Action Generator

Generate punchy CTA button and headline variations.

Calorie & Macro Calculator

Calculate your Total Daily Energy Expenditure (TDEE) and macronutrient splits based on your goals.

Calorie Burn Calculator

Estimate calories burned for an activity using MET values, weight and time.

Calorie Deficit Calculator

The daily calorie deficit needed to reach a goal weight by a target date.

CalVer Version Generator

Generate calendar version numbers like YYYY.MM.MICRO from any date and scheme, with a preview timeline of future releases.

Camera Color Eyedropper

Sample the approximate RGB color of an object through your live camera.

Campaign Budget Planner

Plan campaign budget tasks with organized inputs, timelines, and clear next steps.

Canada CPP and EI Deduction Calculator

Employee and employer CPP, CPP2 and EI contributions with the YMPE, YAMPE and maximum insurable earnings ceilings applied.

Candy Match 3

Play Candy Match 3 free online — a sweet match-3 puzzle game. Swap candies, trigger combos, beat level targets, and chase your high score.

Capital City Quiz

Test your knowledge of world capital cities with timed quizzes, scoring, and streak tracking across 195+ countries.

Capital Gains Calculator

Work out your capital gain, tax owed and net profit on an investment.

Capital Gains Tax Calculator

Calculate short and long term capital gains tax on shares, equity mutual funds and property under the current Indian rules, with indexation where it applies.

Captcha Generator

Generate and verify highly customizable captchas right in your browser. Complete with image noise, curved lines, and stylized text modes.

Caption Emoji Density Checker

Count emoji in a caption, measure density per 100 words, and flag the placements that make a screen reader announcement hard to follow.

Caption Length Optimizer

Check one caption against every platform's character limit and truncation point, including X's 23-character URL rule.

Caption Speed & Collision Checker

Audit SRT and WebVTT cue timing, overlaps, reading-speed signals, and line limits locally with configurable editorial thresholds.

Car AC Gas Refill Cost

Estimate a car AC regas bill from refrigerant type, charge weight, labour, parts and 18% GST, with an R134a versus R1234yf comparison.

Car Battery Replacement Planner

Predict when your car battery needs replacing from its age, battery type, climate, usage pattern and warning signs.

Car Depreciation Calculator

Chart a car's year-by-year depreciation curve, remaining value and IRDAI insurance IDV from price, age and kilometres run.

Car Exchange vs Private Sale

Compare a dealer exchange offer plus bonus against the true net proceeds of a private sale after costs, waiting time and money's time value.

Car Loan EMI Calculator

Car loan EMI, total interest and a year-by-year amortisation schedule with down payment, tenure and processing fees.

Car Ownership Cost Analyzer

Calculate the true cost of owning a car — EMI, fuel with inflation, insurance, maintenance and depreciation — and compare it against taking taxis.

Car Rental Cost Comparison

Compare self-drive rental quotes on daily rate, included km, excess-km charges, fuel policy, GST and deposit for one real trip.

Car Storage Checklist

Checklist to park a car safely for weeks or months, with battery drain days, storage tyre pressure and a return list.

Card Trick

Experience a premium interactive card trick: shuffle, draw, pick a card, and watch a magic reveal with smooth animations.

Cardiac Output Calculator

Calculate cardiac output and cardiac index from heart rate and stroke volume with clinical reference ranges.

Career Prompt Builder

Build AI prompts for resumes, Indian-format CVs, cover letters, interview prep, LinkedIn headlines, salary negotiation, career switches, SOPs and recommendation letters.

Caret Tilde Range Visualizer

See the allowed version window for ^ and ~ semver ranges on a number line, with allowed and blocked neighbours.

Carousel Copy Splitter

Split long copy into balanced carousel slides on sentence boundaries, with a hook slide, a call-to-action slide and per-platform slide limits.

Carpet / Floor Area Calculator

Calculate floor area and material needed for a room.

Carpool Cost Split Calculator

Split carpool fuel, tolls, parking and running cost between riders by the distance each person actually travels.

Carpool Rotation Scheduler

Build a recurring, fair driving rota across your carpool's drivers and passengers.

Carry-On Only Trip Planner

Plan a cabin-bag-only trip: the smallest capsule wardrobe that covers your days, plus a 3-1-1 liquids audit and a weight and volume check.

Cartoon Yourself

Transform your photos into cartoon-style portraits with multiple art styles and customization.

Case Brief Template Generator

Build a structured case brief — facts, issue, rule, holding, reasoning and disposition — in IRAC, FIRAC or CREAC order with a formatted citation.

Cash Deposit Reporting Threshold Checker

Check which Rule 114E reporting, PAN-quoting and section 194N thresholds your cash deposits and withdrawals cross in a financial year.

CBC Report Interpreter

Complete Blood Count interpretation with differential analysis, anemia classification, infection pattern recognition, and clinical recommendations.

CBSE Best Of Five Calculator

Work out the CBSE Class 12 best-of-five percentage: the compulsory language plus your four highest scoring subjects.

Cease & Desist Noise Nuisance Letter

Draft a calm notice for repeated noise nuisance with dates, impact notes, requested remedy and evidence checklist.

Ceiling Paint Coverage Calculator

Work out ceiling paint litres and cost from room length, width, cove depth and the number of coats.

Cell Explorer

Interactive animal and plant cell diagram explorer with clickable organelles, metabolic functions, and cellular biology breakdowns.

Ceremony Invitation Wording

Invitation wording for Griha Pravesh, baby shower, naming ceremony, mundan, thread ceremony and prayer meets, in formal and friendly tones.

Certificate Document Checklist

Documents you need to apply for a caste certificate or a legal heir certificate in India, as a tickable checklist.

Certificate Expiry Tracker

Track TLS certificate expiry dates locally, see days remaining and renewal deadlines, and export calendar reminders.

Certificate Request Letter Generator

Write request letters for a bonafide certificate, transfer certificate (TC), migration certificate, relieving letter, school fee concession, address change or an internship.

Certificate Transparency Watchlist

Prepare a domain watchlist and identify suspicious certificate names.

CFT to Cubic Meter Converter

Convert cubic feet, cubic metres, litres and brass, with material weight in tonnes and truck loads for sand and aggregate.

CGPA to Percentage Converter

Convert CGPA to percentage using CBSE, VTU, Mumbai University and custom multipliers.

CGST SGST IGST Split Calculator

Enter supplier and place-of-supply state codes to see whether GST splits into CGST and SGST or is charged as IGST, with the amounts.

Chai and Coffee Sugar Tracker

Count the added sugar and calories in your daily tea and coffee habit, and see the yearly total against WHO free-sugar limits.

Chair Yoga Desk Routine

Build a timed seated stretch routine for neck, shoulders, wrists, spine, hips and eyes that fits your desk break.

Chaldean Numerology Calculator

Work out Chaldean name compound and root numbers plus psychic and destiny numbers from a date of birth, with the classical 1-8 letter table.

Change Freeze Calendar Planner

Plan deployment freeze windows around festivals, sale events and fiscal close dates, with merged windows and frozen-day totals.

Changelog Generator

Turn a list of changes into a clean, categorised Keep-a-Changelog entry.

Character Limit Checker

Check text against X, Instagram, LinkedIn, SEO and SMS character limits with a live remaining count.

Charger Wattage Calculator

Calculate charger wattage, cable limits, battery charging time, USB-C PD profile fit, and safe power recommendations.

Chat Export Anonymizer

Anonymize participant labels, contact details, links, identifiers, and optional timestamps in TXT, JSON, or CSV chat exports entirely in your browser.

Chatbot Analytics Metric Planner

Pick containment, CSAT and deflection metrics before launch and project deflected volume and savings.

Chatbot Escalation Rules Planner

Define an ordered rule set for when your chatbot must hand a conversation to a human agent.

ChatGPT Chat Export

Convert exported ChatGPT conversations into beautiful documents. Parse, view, search, and export to PDF, DOCX, Markdown, HTML, and more.

Chemical Reaction Explorer

Interactive stoichiometric chemical reaction simulator with animated molecular rearrangements, balanced equations, and enthalpy energy diagrams.

Cheque Amount to Words Converter Indian

Turn a rupee amount into cheque-ready words using the Indian lakh and crore system, with paise and digit grouping.

Chess Multiplayer

Play a full multiplayer chess match locally with legal-move validation, timers, move history, captured pieces, draw offers and resign.

Chess Puzzle Trainer

Sharpen your tactical skills with curated chess puzzles — forks, pins, skewers, discovered attacks, checkmates and endgames across multiple difficulty levels.

Child Education Corpus Planner

Project a degree's future cost with fee inflation and get the monthly SIP needed to fund it in time.

Child Education Cost Planner

Project the future cost of your child's education after education inflation and the monthly SIP needed to fund it.

Child Height Predictor

Predict a child's adult height from the parents' heights (mid-parental method).

Child Photo Privacy Checker

Manually review and mask privacy-sensitive details in a photo you own, then export a flattened copy with metadata removed locally.

Child Safety Home Checklist

Room-by-room childproofing checklist matched to your child's age, your home's stairs, balconies and water, with a readiness score.

Child Screen Time Planner

Age-based daily screen limits from WHO and AAP guidance, with sleep, activity, outdoor and eye-break targets built into a 24-hour day budget.

Chimney Cleaning Planner

Work out how often your kitchen chimney filters need cleaning, when the next service is due and whether its suction suits your kitchen.

Chinese Character Generator

Generate authentic Chinese characters by category with meanings, pinyin, stroke counts, and Unicode. Copy, favorite, and download as PNG/SVG.

Chinese Word Segmentation & Multi-Language Split Tool

Segment Chinese text, split English and Hindi, detect mixed language, and export live NLP-style token results in the browser.

Chit Fund Calculator

Simulate a chit month by month — bids, dividends and foreman commission — to see what your bidding month really costs or earns.

Chladni Pattern Simulator

Visualize sound, vibration, and Chladni-style nodal patterns with an interactive cymatics simulator.

Chmod Permission Calculator

Convert Unix file permissions between numeric (755) and symbolic (rwxr-xr-x) form with a checkbox grid, setuid, setgid and sticky bits.

Chore Chart Maker

Fairly assign a list of chores across people, round-robin.

Chromatic Instrument Tuner

Tune any instrument by microphone, showing the note and how many cents sharp or flat.

Chronotype Finder Quiz

Five-question rMEQ chronotype quiz scoring you as a morning, intermediate or evening type, with your natural sleep window.

Churn Rate Calculator

Customer churn and retention rate for a period.

CI Build Matrix Explosion Estimator

See how many jobs and CI minutes your build matrix dimensions really generate — with GitHub's 256-job limit checked — before you commit.

CIDR Subnet Calculator

Calculate network, broadcast, usable host range, subnet mask and wildcard mask from any IPv4 CIDR block.

CIDR to IP Range Converter

Convert between CIDR notation, start-end IP ranges and Cisco wildcard masks in bulk, with minimal CIDR splitting for arbitrary ranges.

Circle Calculator

Enter a circle's radius, diameter, circumference or area to get the other three, plus arc length, sector area and chord, with units, π options and steps.

Circled Text Generator

Convert letters and numbers into circled Unicode characters with multiple styles including filled, double, and parenthesized.

Citation Generator

Generate accurate citations in APA, MLA, Chicago, Harvard, IEEE, and Vancouver styles instantly.

Class Rank Percentile Calculator

Convert your class rank and class size into the top-percent figure and percentile that college applications ask for.

Class Wise NCERT Coverage Map

Map your UPSC-style NCERT reading across classes 6-12 and subjects, and see coverage percentages and weak spots.

Cleaning Schedule Planner

Organize recurring chores by room, day, priority, owner, and duration.

CLI Command Builder

Build curl, grep, tar and kubectl commands by ticking options, with an explanation of every flag.

Click Speed Test

Free CPS test with 1, 5, 10, 15, 30, 60 and 100 second modes, live clicks per second, saved personal bests, history chart and a space-bar mode.

Client Video Revision Tracker

Log client feedback against video timecodes, track each note's status by round, and flag rounds beyond your contracted allowance.

Clinical Height Converter

Convert height between centimetres, metres, inches and feet-and-inches with the exact 2.54 cm inch and clinical rounding steps.

Clinical Unit Converter

Convert lab report units: blood glucose and cholesterol between mg/dL and mmol/L, creatinine, haemoglobin, bilirubin, vitamin D, blood pressure and clinical body weight.

Clipboard Capsule

Save, manage, categorize, and retrieve your clipboard history seamlessly.

Clipboard History

Track, save and manage your clipboard history with auto-detection and smart categorization.

Clipboard Secret Expiry Guard

Copy a temporary secret with a local expiry timer and make a best-effort clipboard clear only if the same value is still present.

Clock Changes & DST Tracker

The next clock change in any time zone to the exact instant, a full year of changes, and the dates a recurring meeting's time gap silently moves.

Cloned Card Response Playbook

Block, dispute and document an unauthorised card transaction, with your RBI limited-liability position and the bank's reversal deadlines worked out.

Clothing / Body Measurement Conversions

Convert clothing sizes between US, UK, EU, and international standards for women's, men's, and kids' apparel. Also convert body measurements between inches, centimeters, and feet+inches.

Clothing Size Converter for Shopping Abroad

Convert clothing sizes between US, UK, EU, France, Italy, Japan and India, from a label or from your body measurements.

Cloud Budget Alert Planner

Plan budget alert thresholds and forecast triggers from your month-to-date cloud spend, with the day each alert would fire.

Cloud Certification Path Planner

Plan an AWS, Azure or GCP certification sequence with exam fees, study hours and a week-by-week timeline.

Cloud Cost Calculator

Estimate monthly bills for AWS Lambda, EBS and NAT Gateway, Azure Functions, Cloudflare Workers, DigitalOcean Droplets, Netlify, Supabase and Vercel.

Cloud Egress Fee Comparison

Compare what your monthly outbound traffic costs on AWS, Azure, GCP, Oracle, CloudFront, Bunny and Cloudflare.

Cloud Status Board

See the current status of major cloud and SaaS providers on one dashboard.

Cloud Tagging Policy Generator

Generate a mandatory cloud tag schema for cost allocation with allowed values, provider-safe keys, examples and enforcement notes.

Coaching Fee Vs Self Study Cost

Compare the all-in cost of a coaching programme against a self-study plan with books, test series and online courses.

Code Beautifier

Instantly format, clean up and beautify messy JavaScript, JSON, CSS, HTML, XML and SQL — or compact it again.

Code Complexity Analyzer

Measure cyclomatic and cognitive complexity, Halstead volume and the maintainability index of your code, and get specific refactoring suggestions.

Code Review Checklist Generator

Generate a code review checklist tuned to your language, change type and risk level, ready to paste into a pull request.

CODEOWNERS File Generator

Build a CODEOWNERS file with path patterns and team handles, validate owners, and preview which rule wins for any file path.

Codex Chat Transfer

Convert message arrays or Markdown transcripts into OpenAI, Anthropic, Gemini, Cohere, Llama, or Markdown output.

Coding Model Picker

Score hosted, open-weight and local coding assistants against your language, repo size, privacy rules and budget with a transparent weighted rubric.

Coding Prompt Builder

Build precise AI prompts for code review, unit tests, refactoring, regex, SQL explain, Dockerfiles, commit messages, changelogs, API docs and tech specs.

Coffee Brew Ratio Calculator

Work out the exact coffee and water for pour-over, French press, AeroPress, espresso, moka and cold brew.

Coffee Shop Work Spot Rater

Rate a café for remote work on Wi-Fi speed, latency, noise, sockets, table size and seating against real call and concentration thresholds.

Cognitive Performance Tracker

Track your cognitive performance over time with daily check-ins, focus scores, memory trends, and interactive analytics dashboards.

Coin Flip

Flip a fair virtual coin with a 3D animation, best-of series scoring, streaks, and saved heads-tails stats.

Coin Toss Streak Game

Flip 20 coins at once and see the longest run of the same side.

Cold vs Flu Symptom Comparator

Compare your symptom pattern against the typical common cold and influenza profiles, with onset speed, fever and the 48-hour antiviral window.

Cold Weather Workout Layering Guide

Wind chill, frostbite exposure time and a layer-by-layer kit list for training in the cold at your planned intensity.

College Admission Form Checklist

Track every college application's deadline and fee, hold one shared document list, and work out the UGC refund if you withdraw.

College Fee Instalment Planner

Turn a semester fee schedule into a monthly savings plan with due dates and reminder dates.

Color Blindness Simulator

Simulate protanopia, deuteranopia, tritanopia and achromatopsia on your own images in real time, with an adjustable severity slider and side-by-side comparison.

Color Contrast Checker

Check WCAG contrast ratio for text and background colors.

Color Conversions

Convert colors between HEX, RGB, RGBA, HSL, HSLA, HSV, and CMYK formats with a live preview swatch, harmonies, and one-click copy.

Color Match Game

Test your color perception by matching the target color from a grid of similar shades. How good is your eye?

Color Memory Precision Test

Study a colour, watch it disappear, then rebuild it from memory — and get a blended RGB and HSL accuracy score for how close you got.

Color Palette Compare

Compare two color palettes side-by-side in real-world UI mockups to test contrast and aesthetics.

Color Palette from Image

Extract a practical color palette from uploaded images.

Color Picker

Professional real-time color picker with format conversions and palette generation.

Color Psychology Analyzer

Analyze emotional impact, branding psychology, and cultural meanings of colors.

Color Wheel

Interactive colour wheel: pick a colour, get complementary, triadic, analogous and other harmonies with HEX, RGB, HSL, CMYK and contrast checks.

Color-Grade LUT Applier

Apply a .cube LUT to photos and video frames locally in your browser.

Colorblind-Safe Palette Fixer

Screen a local color palette with fixed color-vision simulations, pair-distance cues, role-based text contrast, and bounded alternatives.

Colour Name Finder

Find the closest CSS colour names and plain-English colour terms for any hex value using CIEDE2000 distance.

Colour Palette Generator by Style

Generate accessible colour palettes in cyberpunk, cottagecore, Scandinavian, luxury gold, corporate trust, fintech, medical, kids, Y2K, earthy, monsoon and Indian heritage styles.

Colourblind Logo Checker

Preview a logo under protanopia, deuteranopia, tritanopia and achromatopsia, with CIELAB colour-difference scoring.

Community Post Planner

Plan polls, images and text posts between uploads with an evenly spaced schedule, content mix and effort estimate.

Commute Study Micro Planner

Convert daily commute minutes into a weekly plan of audio lectures and flashcard reviews with real card counts.

Company Info Explorer

Quickly look up key information and metrics about tech companies.

Company Social Media Policy Generator

Build an employee social media policy with disclosure, confidentiality and lawful-speech clauses, plus a coverage score and gap flags.

Compatibility Quiz

Take interactive quizzes to measure compatibility across multiple categories with dynamic scoring and attractive results.

Compliance Calendar for Sole Proprietorship

Build a dated GST, TDS, advance tax and ITR filing calendar for an Indian proprietorship from your own registrations.

Compliance Requirement Checker

Answer a few questions to see whether you need to maintain books of accounts, get a digital signature certificate, need an Import Export Code or give your landlord's PAN for HRA.

Compliment Generator

Brighten someone's day with a random compliment. Choose from categories like personality, appearance, or talent.

Component Naming Auditor

Audit React component names, file names, duplicate declarations, and naming convention drift.

Composer JSON Generator

Build a valid composer.json with PSR-4 autoload, require and require-dev constraints, scripts, config and platform requirements.

Compost Bin Size Calculator

Size a home compost bin in litres from daily kitchen waste, browns ratio and how often you turn the heap.

Compound Interest Calculator

See how your money grows with compound interest across daily, monthly, quarterly, half-yearly, and yearly compounding frequencies.

Compound Interest Visualiser

Chart how compounding pulls away from simple interest over decades, with yearly balances, contributions and the interest-on-interest gap.

Computer Parts Quiz

Test your knowledge of computer hardware components with interactive multiple-choice questions. Learn about CPUs, GPUs, RAM, storage, and more.

Concert Ear Protection Guide

Compare NRR, SNR and flat musician filter ratings and see the protected level and safe exposure time for a gig at any loudness.

Concrete Volume Calculator

Concrete volume for slabs, beams, columns and footings, plus cement bags, sand, aggregate and water by mix ratio.

Concurrency vs RPS Calculator

Convert between concurrent users, requests per second and response time using Little's Law, with think-time support.

Condorcet Election Judge

Find the Condorcet winner from pairwise comparisons, or expose a voting cycle.

Confidence Interval Calculator

Calculate a confidence interval for a mean or proportion from your sample estimate, standard error, and chosen confidence level.

Config File Generator

Generate config files for Prettier, PostCSS, Husky, Dependabot, Changesets, Lerna, pnpm and Yarn workspaces, Nginx compression and logrotate.

Consent Banner Dark Pattern Spotter

Score a cookie banner for the 14 manipulative design tricks regulators flag, and learn how to refuse properly.

Consent Form Generator

Create consent forms for video testimonials, event photography, pet boarding and home service entry, ready to print or share.

Consent Inventory Mapper

Map every point where your business collects consent and where it can be withdrawn.

Consent Receipt Wallet

Track what data you shared, why it was collected, and when consent expires.

Consent String Decoder

Decode consent strings into understandable vendor and purpose permissions.

Constellation Finder

Explore 15+ major constellations with an interactive night sky map

Construction Cost Estimator

Approximate house construction cost from built-up area, quality of construction and city, with a work-head and material breakdown.

Consumer Complaint Draft Builder

Build a formatted consumer complaint from your facts, the relief sought and evidence.

Contact Lens Wear Tracker

Track daily wear hours, replacement dates and lens case changes for daily, fortnightly, monthly, quarterly or yearly contact lenses.

Contact Memory Vault

Privately organize preferences, conversations, and gift ideas.

Container Base Image Chooser

Compare alpine, slim, distroless, scratch and full base images by size, libc, shell and debug tooling — and get a ranked pick.

Container Image Digest Pinning Helper

Convert mutable image tags into pinned @sha256 digest references and scan Dockerfiles or manifests for unpinned images.

Content & Marketing Prompt Builder

Build AI prompts for ad copy, SEO articles, blog outlines, LinkedIn posts, X threads, YouTube and reel scripts, newsletters, cold emails, press releases and case studies.

Content Calendar Planner

Plan content calendar tasks with organized inputs, timelines, and clear next steps.

Content Repurposing Matrix

Turn one long video into a counted set of shorts, carousels, threads and posts, with production hours and a publishing calendar.

Continent Challenge

Test your knowledge of the 6 inhabited continents — identify countries, capitals, flags, and geographic facts with timed quizzes and scoring.

Contraction Timer

Time contraction length and start-to-start gaps, test the 5-1-1 pattern, and copy a summary for your maternity unit.

Contribution Margin Calculator

Contribution margin per unit, ratio and total.

Conventional Commit Builder

A tool to help developers create conventional commits with standardized formatting

Conversion Rate Calculator

Conversion rate from visitors and conversions, with optional revenue.

Conway's Game of Life

An interactive simulator for Conway's Game of Life, a cellular automaton where users can create initial configurations and watch how they evolve over time based on simple rules.

Cookie & GPC Behavior Auditor

Test how a site responds to a cookie reject action and to Global Privacy Control.

Cookie Consent Banner Text Generator

Generate cookie banner copy with accept, reject and preferences wording tuned to GDPR, UK PECR, India's DPDP Act or CPRA.

Cookie Viewer

View, manage, add, edit, and delete browser cookies in real-time.

Coolant Mix Ratio Calculator

Work out coolant and water litres for your radiator capacity, with the freeze point and cap-pressure boil point of the mix.

Cooper Test VO2 Max Calculator

Turn the distance covered in a 12-minute run into an estimated VO2 max, pace, METs and a Cooper fitness rating.

Copyright Notice Generator

Build a correctly formed copyright notice for websites, software, print, video and sound recordings.

Corporate Tool

Provides information about companies, products, and services tools

Correlation & Simpson's Paradox Visualizer

Compare per-group and aggregate correlations from grouped x/y data, then flag potential Simpson's-paradox reversals where the trends disagree.

CORS Configuration Linter

Flag wildcard, credential, and unsafe-origin combinations.

Cosine Similarity Calculator

Paste two embedding vectors and get cosine similarity, dot product, Euclidean distance and the angle between them.

Cost Inflation Index Calculator

Indexed cost of acquisition and improvement using the notified Cost Inflation Index for the purchase and sale financial years.

Cost Per Unit and Batch Cost Calculator

Absorb fixed overheads and variable costs across a production batch to get true cost per unit, contribution and break-even.

Counselling Fee Refund Tracker

Track seat acceptance fees and withdrawal dates to see your expected refund under the UGC 100/90/80/50/0 percent slabs.

Countdown Days Calculator

See how many days are left until any target date, with weeks, months and working-day breakdowns.

Countdown Timer

Run multiple named countdown timers with progress rings, alarms, and presets — accurate even in background tabs.

Country Greeting Finder

Find how to say hello in the native language of any country, with pronunciation guides, formal and informal variants, common replies, and cultural notes.

Country Quiz

Test your geography knowledge with dynamic quizzes powered by real-time country data — capitals, currencies, areas, languages, and more.

Course Caption Coverage Tracker

Track caption and transcript coverage across your course by lesson and by runtime, with an estimate of the work left.

Course Trailer Script Builder

Draft a structured online-course promo script with per-beat timing targets and a word budget for your narration pace.

Course Video Naming Builder

Generate consistent, sortable video file names across course modules and lessons, with padding, case style and length checks.

Cover Letter

Create a cover letter for your next job interview

COVID Booster Interval Planner

Work out the earliest date you become eligible for a COVID booster from your last dose, any recent infection and the interval rule you follow.

CPR Compression Rate Metronome

A 100 to 120 beats per minute practice metronome with 30:2 cycle timing, rescuer switch prompts and depth reminders.

CRC32 Calculator

Compute the CRC32 checksum of text as a hex value.

Creatine Loading Calculator

Creatine monohydrate loading and maintenance doses from your bodyweight, split per serving, with a dated day-by-day schedule.

Creative Brief Generator

Build a tight, agency-standard creative brief with audience, single-minded proposition, mandatories and a completeness score.

Creative Commons Licence Picker

Answer two questions to get the right Creative Commons 4.0 licence, what it permits, and ready-made attribution text in plain form and HTML.

Creator Backup 3 2 1 Planner

Size a 3-2-1 backup plan for your footage library: drives needed, cloud cost over time and how long a full restore takes.

Creator Collab Brief Builder

Build a creator collab brief with deliverables, usage rights, a dated timeline and a fee breakdown including 18% GST and TDS.

Creator Contract Rights Timeline

Extract usage, exclusivity, whitelisting and renewal dates from a creator contract.

Creator Equipment Depreciation Calculator

Year-by-year depreciation on camera and studio gear by straight-line, declining balance or sum-of-years, plus true cost per shoot.

Creator Gear Packing List

Build a shoot-specific gear list with calculated battery counts, card capacity, backup storage and total pack weight.

Creator Income Tracker

Track sponsorship, affiliate and platform payouts in one place, stored locally.

Creator Posting Time Planner India

Plan weekly posting slots against Indian audience windows in IST and see the exact local time for your diaspora audience.

Creator Tax Deduction Checklist India

Informational checklist of creator business expense categories in India, with business-use apportionment, depreciation and compliance flags.

Creator Workload Burnout Calculator

Add up your weekly content production hours and check them against the 48h and 55h working-time risk thresholds.

Credit Card Closure Confirmation Request

Draft a credit card closure request with the 7-working-day RBI deadline, delay penalty at Rs 500 a day and bureau update ask.

Credit Card Interest & Minimum Payment Trap

See the true cost of paying only the minimum due — months to clear, total interest with GST, and faster payoff plans.

Credit Card Minimum Due Calculator

See how many years and how much interest it takes to clear a credit card balance if you only ever pay the minimum due.

Credit Card Reward Points Value Calculator

Convert reward points to rupees and compare cards on effective return after fee, GST and caps.

Credit Score Impact Simulator

Estimate how utilisation, hard enquiries and missed payments move your credit score, with a before and after comparison.

Credit Utilisation Ratio Calculator

Credit utilisation across all your cards, per-card ratios, and the exact spend room to stay under 30 percent.

Critical Value Tables

t, z, chi-square and F critical values at any degrees of freedom, plus exact p-values from an observed statistic.

Cron Expression Generator

Build cron expressions with readable schedule previews.

Crontab Evaluator

Preview upcoming run times for standard five-field cron expressions.

Crontab Line Builder

Build and validate a crontab line, read it back in plain English, preview the next run times and wrap it with logging and a flock guard.

Crop Factor Calculator

Convert focal length, aperture and ISO between sensor sizes using the 35mm diagonal, plus the resulting angle of view.

Crop to Aspect Ratio Calculator

Find the exact crop width, height and offsets to convert footage or an image to a target aspect ratio, with an ffmpeg crop string.

Crush Percentage

Evaluate your chemistry and odds with your crush by taking a fun interactive compatibility quiz.

Crypto Loss Set Off Rules Explainer

See why Section 115BBH blocks crypto losses from offsetting any gain, and what the no-set-off rule costs you in tax.

Crypto P&L Calculator

Calculate crypto profit or loss from buy price, sell price, quantity, exchange fees, slippage, and tax.

Crypto Price Alarm

Get a browser notification when your chosen crypto asset crosses a target price.

Crypto Tax Calculator India

Flat 30% VDA tax under Section 115BBH plus 1% TDS under 194S, with per-trade gains and losses that cannot be set off.

Crypto Wallet Checker

Validate and identify crypto wallet addresses across 10 major blockchains.

CSP Auditor

Find weak or unsafe Content Security Policy directives.

CSS Beautifier

Format, beautify, and clean minified or messy CSS code with options to adjust tab indentation size and copy output.

CSS Border Radius Generator

Generate border-radius rules visually. Custom simple and advanced 8-value organic border styles with interactive controls.

CSS Box Shadow Generator

Create smooth customizable CSS shadows for modern UI designs.

CSS Button Generator

Create premium CSS buttons visually. Tweak fonts, borders, shadows, hover animations, gradients, and export HTML/CSS.

CSS Clamp Generator

Build a responsive CSS clamp() value.

CSS Filter Effects

Apply standard CSS filter properties (blur, grayscale, sepia, invert, hue-rotate) visually with live image preview and clean CSS exports.

CSS Flexbox Generator

Configure CSS Flexbox layouts visually. Custom item numbers, container properties, alignment configurations, and responsive code outputs.

CSS Grid Generator

Generate CSS Grid layouts visually. Adjust column/row counts, gaps, and copy complete CSS grid-template code instantly.

CSS Keyframes Animation Builder

Generate animations for your projects in easy way

CSS Minifier

Compress, minify, and shrink messy CSS code to reduce bundle size, showing detailed savings statistics.

CSS Specificity Referee

Put two CSS selectors against each other and see which one wins, which cascade criterion decided it, and the smallest change that flips the result — layers and !important included.

CSS Tools

Format and minify CSS quickly in the browser.

CSS Triangle Generator

Generate a CSS triangle using the border trick.

CSV Carbon Footprint Analyzer

Calculate an estimated carbon footprint from your utility and travel CSV exports.

CSV Converter

Convert CSV into JSON, HTML, XML, SQL inserts, or Python dictionaries.

CSV Lead Cleaner

Clean and organize CSV leads quickly with smart filtering.

CSV to JSON

Convert CSV file or text into JSON format

CSV to SQL Insert Converter

Convert CSV rows into INSERT statements with RFC 4180 parsing, type inference, dialect quoting and batched multi-row VALUES.

CTET Answer Key Score Calculator

Score CTET Paper 1 or Paper 2 section by section from your response sheet — 150 marks, no negative marking.

Cups to Grams Converter

Convert cups, tablespoons and millilitres to grams for 40+ baking ingredients using real density data.

cURL to Code Converter

Convert simple cURL commands into fetch, Axios, or Python requests.

Currency Amount to Words Converter

Spell any money amount in words for cheques, invoices and contracts — Indian or international numbering, eight currencies.

Currency Conversion Fee Calculator

True cost of a forex transaction after exchange rate markup, card fees and GST, with the effective rate you actually pay.

Currency Conversion Markup Calculator

Reveal the hidden spread between the mid-market rate and the rate you are offered, and the true all-in cost of a transfer.

Currency Converter

Convert global currencies instantly using accurate real-time rates.

Currency Mental Math Cheat Sheet

Quick mental tricks to convert prices from USD, AED, GBP, SGD, CAD, CHF, JPY, MYR, NPR and VND to rupees while travelling, with a printable cheat sheet.

Currency Profit/Loss Calculator

Calculate profit or loss on currency exchanges and forex trades. Track buy/sell rates, position size, and swap fees.

Currency Quiz

Test your knowledge of world currencies — identify currencies, exchange rates, and flags with timed quizzes and scoring.

Cursive Text Generator

Turn your text into stylish Unicode letters for bios, posts and usernames.

Curtain Colour Matcher

Find curtain colours that complement wall paint and upholstery, with LRV gaps, hue distance and fade risk for each.

Curtain Fabric Calculator

Curtain fabric metres from track width, drop, fullness and heading type, including pattern repeat, lining, tape and hooks.

Cute Text Generator

Convert your text into cute Unicode styles with kaomoji, decorative symbols, and emoji combinations.

Cybercrime Evidence Pack Builder

Organize an incident timeline and locally hash evidence copies into a structured, user-controlled evidence manifest and counts-only summary.

Cycle Commute Savings Calculator

Work out the fuel, parking, maintenance and CO2 you save by cycling to work, and how long the bicycle takes to pay for itself.

Cycling Cadence Calculator

Turn cadence, chainring, cog and wheel size into road speed, gear inches, gain ratio and metres of development.

Cycling Calorie Estimator

Estimate calories burned cycling from distance, speed, rider weight, terrain, gradient and headwind, using a physics power model.

Cycling Power to Weight Calculator

Watts per kilogram from your FTP and body mass, with rider category bands, climbing VAM and a target-watts breakdown.