Tools starting with B

Baby Cost First Year Calculator

Estimate a baby's first-year cost from delivery to childcare, with diaper counts, the immunisation schedule and a monthly saving plan.

Baby Eye Color Calculator

Estimate a baby's chance of brown, green or blue eyes from the parents' and grandparents' eye colors, with a two-gene Punnett square and clear limits.

Baby Growth Percentile Calculator

A rough weight-for-age percentile estimate for babies 0–24 months.

Baby Name Finder

Find baby boy and girl names with meanings from Hindu, Muslim, Sikh, Christian, Jain, Buddhist and Parsi traditions, filtered by letter and length.

Baby Name Generator

Discover unique, meaningful baby names with origins, meanings, and popularity trends for boys, girls, and gender-neutral options.

Baby Size By Week Visualizer

See average fetal length and weight for any week from 8 to 40, with a familiar fruit or vegetable comparison.

Baby Wake Window Planner

Build a nap and bedtime schedule from age-based awake windows, nap counts and total sleep needs for babies and toddlers.

Background Remover

Remove your Image background in just a one click

Backup Restore Verifier

Check that your backup files really do decrypt, extract and open before you need them.

Baggage Allowance Checker

Check cabin and check-in baggage allowance for IndiGo, SpiceJet, Akasa Air, Emirates, Etihad, Singapore Airlines, Thai, Turkish, British Airways and Ryanair.

Baking Pan Size Converter

Scale any recipe between pan sizes with an exact ingredient multiplier, bake-time advice, and overflow warnings.

Balcony Makeover Planner

Plan balcony flooring, planters, seating and lighting by size — with a budget and an added-load check.

Balcony Solar Kit Estimator

Estimate yearly output, bill savings and payback for a plug-in balcony solar kit from tilt, orientation and latitude.

Band Name Generator

Generate band name ideas by genre.

Bandwidth Transfer Time Calculator

Calculate how long a file or dataset takes to transfer at a given link speed, with protocol overhead and unit conversions handled.

Bank Account Closure Letter

Generate a bank account closure request letter with balance transfer details, enclosures and a closure-charge window check.

Bank Account Number Masking Tool

Mask account, card and Aadhaar numbers to PCI DSS and UIDAI display rules before sharing a screenshot or document.

Bank Account Opening Checklist

The exact KYC papers each Indian account type needs — resident, minor, senior, proprietorship, NRE, NRO and FCNR — with readiness scoring.

Bank Charges and Penalty Estimator

Estimate a year of minimum balance penalties, excess ATM fees, return charges and GST on an Indian savings account.

Bank FD Maturity Calculator with TDS

Fixed deposit maturity value with quarterly compounding, year-wise interest accrual, section 194A TDS and your post-tax return.

Bank Request Letter Generator

Write bank and insurance request letters: account closure, balance certificate, cheque stop payment, charges refund, nominee change, loan foreclosure, loan statement and free-look cancellation.

Bank Statement Redactor

Manually cover sensitive bank-statement details and export a flattened PDF or PNG entirely in your browser.

Banner Maker

Design a LinkedIn banner, an email newsletter header or a Twitch offline banner at the right size and download it.

Barbell Plate Loading Calculator

Work out exactly which plates to load per side for any target weight, bar type and collar setup, in kilograms or pounds.

Barcode Generator

Generate scannable barcodes from text, product codes, and quick inventory labels.

Barcode Scanner

Scan barcodes and get the data

Bargaining Practice Simulator

Practise haggling: mirrored opening counter, target and walk-away price, plus a round-by-round concession ladder.

Base Converter

Convert numbers between binary, octal, decimal, hex, and base36.

Base URL Path Joiner

Join a base URL with path segments the safe way, and see how it differs from RFC 3986 reference resolution with slashes, dot segments and query strings.

Base32 Encoder / Decoder

Encode text to Base32 (RFC 4648) or decode Base32 back to text, right in your browser.

Base58 Encoder

Encode text to Base58 (Bitcoin alphabet) or decode it back.

Base64 Audio Converter

Preview and download Base64 audio data URLs.

Base64 in URL Decoder

Find and decode base64, base64url and hex blobs hidden inside a link, including redirect targets and embedded email addresses.

Base64 to ASCII

Decode Base64 encoded strings into readable ASCII text instantly.

Base64 to File

Turn Base64 strings or data URLs into downloadable files.

Base64 to Hex

Decode Base64 into hexadecimal byte output locally.

Base64 to Image

Decode a Base64 string or data URL back into an image, identify its real format from the file signature, and read its pixel dimensions.

Base64 to PDF

Decode a Base64 string or data URL back into a PDF, preview it, and check its version, page objects, encryption and trailer.

Base64 to Text

Decode Base64 strings into readable UTF-8 text, with padding repair, URL-safe alphabet support and a validity check.

Base64 to Video

Decode a Base64 string or data URL back into a video file, identify the container from its magic bytes, and read duration, frame size and bitrate.

Base64 URL Converter

Convert between plain text, standard Base64 (RFC 4648 §4) and URL-safe base64url (§5), with padding repair and a URL length comparison.

Base64 URL Encoder

Encode text, standard Base64 or hex bytes into URL-safe base64url (RFC 4648 §5), with padding control and URL and cookie size checks.

Bash Script Scaffold Generator

Generate a safe bash script skeleton with strict mode, ERR and EXIT traps, usage, logging, root check and a flock guard.

Basic Auth Header Generator

Generates a basic authentication header based on provided credentials

Basic Calculator

A premium glassmorphic calculator. Supports basic arithmetic operators (+, -, *, /), signs, and calculation history.

Batch Face Privacy Blur

Blur bystander faces detected in your photos, in batches.

Batch Generation Tool

Create dynamic batch workflows with live generation, queue tracking, reusable templates, local history, analytics, and browser exports.

Batch Image Workflow Runner

Build resize, crop, recolor and watermark steps into a reusable image pipeline.

Batch Metadata Scrubber

Remove EXIF, GPS, author and revision data from images and documents in bulk.

Batch Timestamp Conversion Tool

Convert mixed Unix timestamps and human dates in real time with timezone comparison, validation, history, search, and browser exports.

Battery Health and Lifespan Predictor

Predict battery health, degradation risk, charging cycles, and estimated device lifespan from usage patterns.

Bayesian Update Calculator

Calculate the posterior probability from a prior probability and new evidence using Bayes' theorem.

BCAA and EAA Dose Calculator

Work out BCAA and EAA doses from a leucine target, check them against WHO amino acid requirements, and see whole-food equivalents.

Beach Day Tide and Timing Planner

Find the best hours on the beach by scoring every half-hour against UV, heat lag, crowds and the tide using the rule of twelfths.

Beam Deflection & Stress Calculator

Calculate deflection and bending stress for standard simply supported beam load cases.

Beard Style Preview

Preview different beard styles on your face with AI-powered jawline detection. Try stubble, goatee, full beard, and more.

Beauty Score Calculator

Calculate your facial beauty score based on symmetry and the Golden Ratio.

Bed Size Comparison Chart

Compare single, double, queen and king bed sizes across Indian, US, UK and EU standards in inches, cm and feet.

Before vs After Comparator

Compare two images with slider, side-by-side, and fade overlay modes. Includes resolution and difference analysis.

Before/After Slider

Compare two images interactively with a draggable before/after slider. Perfect for showcasing edits, restorations, and transformations.

Belated and Updated Return Deadline Tracker

Track the section 139(1) due date, the belated and revised return window and the 48-month ITR-U timeline for any assessment year.

Bicycle Chain Wear Checker

Turn a ruler measurement into chain elongation percentage and tell you whether the chain, cassette or chainrings need replacing.

Bicycle Frame Size Calculator

Find your road, mountain or hybrid bike frame size from height and inseam using the classic inseam-multiplier fit formulas.

Bicycle Maintenance Planner

Turn your weekly mileage and riding conditions into a dated bike service schedule: cleaning, lubing, and every part replacement interval.

Big-Button Medical Info Card

Build a large-text card listing medicines, allergies and emergency contacts.

Bike Chain Slack Guide

Set correct chain slack, measure chain stretch across 20 links against the 2% service limit and time your next lube.

Bike Loan EMI Calculator

Work out two-wheeler loan EMI, total interest, processing fee and a year-by-year amortisation schedule from the on-road price.

Bike Mileage Tracker

Log two-wheeler fill-ups and get true tank-to-tank mileage, cost per kilometre and the trend across every full tank.

Bike Service Schedule Planner

Plan free and paid service dates for Hero, Honda, Bajaj and Royal Enfield motorcycles by kilometres and months.

Bill of Supply Generator

Build a printable Rule 49 bill of supply for exempt, nil-rated and composition-scheme sales, with GSTIN check and amount in words.

Bill Splitter

Split a restaurant bill, group trip expenses, a shared shopping cart or a student mess bill fairly, with tax, tip and unequal shares.

Binary / Hex / Decimal Converter

Convert binary, hexadecimal, decimal, and ASCII values quickly.

Binary Calculator

Add, subtract, multiply and divide binary numbers, run AND, OR, XOR, NOT and shifts, with 8–64-bit two's complement, carries and a bit grid.

Binary Learning Tool

Learn binary numbers with interactive decimal-to-binary and binary-to-decimal converters, bit position visualization, and practice quizzes.

Binaural Beat Generator

Create binaural beats, isochronic tones, solfeggio tones, and guided audio sessions in your browser.

Bingo Game

Play a classic 5x5 Bingo game with auto-generated boards, number calling, win detection, confetti celebrations, and score tracking.

Bio Link Page Builder

Build a professional creator bio page with live preview, sortable links, branding controls, local save, QR sharing, and export.

Bionic Reading Converter

Adds optional visual emphasis to the start of each word.

Birthday Analyzer

Get detailed birthday insights including zodiac signs, age analytics, milestones, and live countdowns.

Birthday Invitation Maker

Design a birthday invitation with date, venue and RSVP details, then download it as a 300 dpi A5 print or a square/story image.

Birthday Poem Generator

Create a personalised birthday poem draft from a name, age, relationship, tone and a shared memory.

Birthday Wishes Generator

Happy birthday wishes in Hindi, Bengali, Marathi, Gujarati, Tamil, Telugu, Kannada, Malayalam, Punjabi, Urdu, Odia and Nepali for family and friends.

Black-Scholes Options Pricer

Price a European call or put option from spot, strike, volatility, and rate inputs, and calculate all five Greeks.

Blister Pack Refill Tracker

Count the tablets left in your strips and get the day supply runs out, the day to reorder, and how many packs to buy.

Block Stacker

Free falling-blocks puzzle game — stack pieces, clear lines, and chase a high score.

Blog Outline Generator

Generate a structured blog outline (intro, sections, conclusion, FAQ) for any topic.

Blog Post Idea Generator

Generate fresh blog post angles for any topic.

Blog Terms and Conditions Generator

Create website terms with content ownership, comment moderation, DMCA notice-and-counter-notice windows and grievance deadlines.

Blog Title Generator

Generate catchy blog title ideas from a keyword and tone.

Blood Alcohol Content Calculator

Estimate BAC from standard drinks using the Widmark formula. For education only.

Blood Pressure Classification Tool

Classify blood pressure readings based on ACC/AHA and ESC clinical guidelines with trend tracking.

Blood Type Calculator

Predict a child's possible ABO and Rh blood types from both parents with Punnett squares and percentages, find a parent's type, and check donor charts.

Blue Green Deployment Checklist

Generate a blue-green cutover checklist with DNS wait time, canary ramp, session and migration steps, and rollback triggers.

Blue Light Curfew Calculator

Work back from your wake-up time to find when to switch on night mode, stop screens and turn the lights out tonight.

Blur Comparison

Interactively compare different blur intensities on your images with a side-by-side slider.

Blur Detector

Detect motion blur, lens blur, and out-of-focus regions in images with blur heatmap visualization and AI suggestions.

BMI Calculator

Calculate your Body Mass Index

BMI Prime Calculator

BMI Prime is your BMI divided by the upper healthy limit, so 1.00 is the ceiling and 1.15 means 15 percent over it.

BMR Calculator

Basal metabolic rate (calories at rest) via the Mifflin-St Jeor equation, plus daily needs.

Board Exam Percentage Calculator

Calculate your Class 10 or 12 percentage using CBSE, ICSE, UP Board, Bihar Board, Maharashtra HSC, Karnataka PUC, Kerala Plus Two, Rajasthan and West Bengal rules.

Board Foot Calculator

Convert timber thickness, width and length into board feet, cubic feet and cubic metres, with waste allowance and total cost.

Body Fat Percentage Calculator

Estimate body fat with the US Navy tape method or BMI formula, then see fat vs lean mass and plan a realistic goal.

Body Frame Size Calculator

Find whether you have a small, medium or large body frame from your wrist circumference and height, with a frame-adjusted ideal weight.

Body Surface Area Calculator

Estimate body surface area (BSA) using the Mosteller and Du Bois formulas.

Bolt Torque & Preload Calculator

Estimate clamp load and preload from bolt diameter, applied torque, and nut factor (K).

Bonafide Certificate Request Drafter

Draft a formal bonafide certificate request letter to your school or college with the purpose, roll number and details filled in.

Bond Duration & Convexity Calculator

Calculate a bond's Macaulay duration, modified duration, and convexity to measure its price sensitivity to interest rate changes.

Bond Yield Calculator

Current yield and approximate yield-to-maturity for a bond.

Bonus and Variable Pay Calculator

Calculate your bonus payout from target variable pay, performance rating multipliers, company payout factor and proration.

Book Buy Vs Rent Calculator

Compare buying a textbook (with expected resale) against renting it per term over your course — including the break-even point.

Bookmark Capsule

Organize, search, categorize, preview, and manage your website bookmarks.

Bookmark Organization Assistant

Organize bookmarks with folders, categories, tags, favorites, drag-and-drop, search, filters, bulk actions, and import/export.

Bookmark Page Organizer For Books

Save page references per topic across multiple books and get one sorted, copyable topic index.

Bookshelf Capacity Calculator

Count how many books a shelf holds, the load in kilograms, and the maximum span before the shelf sags.

Bootstrap Confidence Workbench

Calculate a seeded, reproducible bootstrap confidence interval for the mean from your numeric sample, with adjustable iterations and confidence level.

Box Breathing Exercise

Follow a guided breathing pace with a visual timer, from box breathing to the 4-7-8 sleep breath.

BPM Tap Tempo Counter

Tap along to any song to find its BPM instantly, with tempo markings, a steadiness score and genre references.

BPM To Delay Milliseconds Calculator

Turn a tempo into delay, pre-delay and LFO times in milliseconds, hertz and samples for every straight, dotted and triplet note value.

Braille Dot Chart Trainer

Learn the six-dot braille cell with a full dot-number chart, a live text-to-braille view and dot-position quizzes.

Braille Embosser Sheet Maker

Convert text into an embosser-ready Braille or BRF sheet layout.

Braille Learning Tool

Learn Braille alphabet (A–Z), numbers (0–9), and common punctuation with interactive cards, quizzes, and progress tracking

Brain Processing Speed Test

Measure your visual processing speed and cognitive efficiency with a symbol-to-digit substitution task modelled on clinical tests.

Brand Asset Naming Convention Builder

Build a file naming rule for logos, exports and campaign assets, validated against POSIX, Windows and S3 filename limits.

Brand Colour Palette Locker

Lock brand colours and generate tints, shades, hex, RGB, HSL and CMYK tables with contrast and ink coverage checks.

Brand Deal Rate Calculator

Estimate a brand deal pricing range from your reach, CPM and deliverables.

Brand Kit Manager

Create, organize, preview, and export complete brand kits with logos, colors, typography, links, and guidelines.

Brand Social Avatar Kit Generator

Crop one square source into circle-safe profile pictures at each platform's recommended upload size, entirely in your browser.

Brand Voice Guideline Generator

Turn four tone dials into a shareable brand voice guide with do and don't rules, word choices and reading-level targets.

Brass to CFT Converter

Convert brass to cubic feet, cubic metres, tonnes and truckloads for sand, aggregate and other loose construction material.

Breach Notification Timeline Planner

Map the review and notification milestones required from the date a breach is discovered.

Breach Prefix Checker

Prepare a privacy-preserving password-prefix lookup without uploading the full password.

Break Even Accuracy Calculator

Find the accuracy above which attempting a question earns marks under any negative marking scheme, and how many options you must rule out.

Break Even Subscribers Calculator

How many paying members you need after platform and processing fees to cover monthly production costs, plus churn replacement and time to get there.

Break Ratio Optimiser

Match your focus span to a proven study-break protocol (25/5, 50/10, 52/17 or 90/20) and get a full session schedule.

Break-Even Calculator

Calculate zero-profit break-even units, revenue, margin of safety, profit targets, and cost-volume scenarios.

Breaking Change Impact Checklist

Generate a consumer impact checklist and risk score before shipping an API or library breaking change.

Breast Self-Exam Reminder

Work out the best monthly day for a breast self-check from your cycle, with a step-by-step guide and 12 upcoming dates.

Breathing Pacer with Tones

Audio-guided breathing pacer with adjustable inhale, hold and exhale ratios, box breathing, 4-7-8 and coherent presets.

Brick Breaker

Smash every brick with paddle and ball in this free arcade brick breaker game with levels and power-ups.

Brisk Walk Intensity Checker

Check whether your walk counts as brisk using cadence, heart-rate zones, the talk test and Borg RPE together.

British American Spelling Converter

Convert a whole document between British and American spelling using a curated word list plus the -our, -ise and -re suffix rules.

Brokerage & Trading Charges Calculator

See every rupee a trade costs — brokerage, STT, GST, stamp duty and DP charges — plus your real net profit.

Browser Extension Permission Analyzer

Highlight risky extension permissions and combinations in a manifest.

Browser Fingerprint Visualizer

See the exact canvas, WebGL, audio, font and hardware signals your browser leaks, and score how identifiable that fingerprint makes you.

Browser Session Analyzer

Analyze browser tab sessions, detect duplicates, categorize domains, and get productivity insights to clean up your browsing.

Browser Session Exporter

Parse tab logs, bookmark exports, or URL lists and export them as clean Markdown logs, JSON dumps, or HTML links lists.

Browser Storage Cleanup Planner

Plan exactly which browser stores to clear, which to keep, and what breaks — cookies, localStorage, IndexedDB, service workers and more.

BTU to Ton Converter

Convert cooling capacity between BTU per hour, tons of refrigeration, kilowatts and kcal/h, with the electrical draw at a given COP.

Bubble Text Generator

Turn your text into Ⓑⓤⓑⓑⓛⓔ circled letters for bios and posts.

Bucket List Goal Planner

Turn a goal and target date into a plan with a countdown and milestones.

Budget Planner

Create a monthly budget with income and expense categories. Track spending, set limits, and visualize your financial health.

Buffer pH Calculator

Calculate buffer pH using the Henderson-Hasselbalch equation.

Bulk Order Discount Calculator

Price a quantity order across volume tiers, flat or graduated, and see the effective per unit cost and the next break worth reaching.

Bulk Text Replacer

Replace multiple text values instantly with smart automation.

Bulk URL Opener Tool

Open multiple URLs instantly with one click.

Bullet to Prose Prompt

Count your bullets, budget the paragraphs and sentences they should expand into, and build the prompt that turns notes into prose.

Burn-In Subtitle Encoder

Burn styled subtitles permanently into a video file.

Business Card

Create a business card for your project & clients

Business Card Bleed Template

Generate a press-ready business card template with bleed, trim, safe zone and crop marks, sized in real millimetres.

Business Days Calculator

Count working days (Mon–Fri) between two dates, excluding weekends.

Business Name Generator

Generate professional, creative business names for your brand, startup, or venture, with industry-aware word banks and four naming styles.

Business Name Numerology Checker

Compare shortlisted business names side by side on Chaldean and Pythagorean numbers plus domain, handle-length and readability checks.

Button Minimum Size Spec Generator

Turn font size, line height and padding into a button box, then check it against WCAG 2.5.8, WCAG 2.5.5, Apple HIG and Material target sizes.

Byte Converter

Convert bytes, bits, kB/MB/GB/TB and KiB/MiB/GiB/TiB in one place, and see why a 1 TB drive shows as 931 GiB.