Tools starting with F

Face Recognition Memory Test

Test your facial memory and recognition ability by studying and identifying faces.

Face Similarity Checker

Compare visual similarity between two face images using client-side landmark analysis. Completely private and runs in-browser.

Face Symmetry Checker

Analyze your facial symmetry with AI-powered landmark detection. Score your eye, brow, cheek, jaw, nose, and lip symmetry with detailed metrics.

Facebook Page Cover Maker

Find the cover area that survives both the 820x312 desktop crop and the 640x360 mobile crop, with the profile photo mapped.

Factorial Calculator

Exact factorial (n!) of a whole number using big integers.

Fake Chat Maker

Create clearly watermarked mock chat screenshots for social posts, UI demos, scripts, and storytelling templates.

Fake Data

Generate fake data for testing

Fake Excuse Letter Generator

Generate professional-looking fake excuse letters for missing work, school, or events with customizable details.

Fall Prevention Home Checklist

Room-by-room home fall hazard checklist with a safety score, personal risk questions and the remaining fixes ranked by impact and effort.

Family Anti-Scam Agreement Builder

Turn household rules on OTPs, urgent money requests and safe words into a written agreement, scored against the common scam types.

Family Car Size Selector

Match a car body type to your seat count, child seats, luggage volume and the longest car your parking allows.

Family Emergency Contact Tree

Build a printable family contact tree with call priority and who does what.

Family Medical History Tree

Map family conditions and hereditary-history notes privately.

Family Photo Archive Redundancy Checker

Check whether your family photo archive really exists in two independent places, and score it against the 3-2-1-1-0 backup rule.

Family Safe-Word Generator

Create a memorable, high-entropy family verification phrase locally for voice-clone, impersonation, and emergency-message scams.

Fancy Text Generator

Generate stylish Unicode text variants for bios, posts, and names.

Fantasy Character Name Generator

Generate six random two-part fantasy character names in one click.

Fastag Recharge Planner

Plan FASTag top-ups from your toll usage: daily burn, days of balance left, recommended recharge and the return-journey saving.

Fasting Window Planner

Plan your 16:8 or 18:6 intermittent fasting eating window around wake time, work and workouts.

Favicon Dark Mode Preview

Check a favicon on light and dark browser tabs, measure WCAG contrast against each tab colour and spot pinned-tab problems.

FD Break-or-Borrow Calculator

What you actually get for breaking a fixed deposit early, and whether a loan against the FD would leave you better off.

Feedback Categorizer

Group customer feedback into themes, estimate sentiment, and surface high-priority product signals.

Feet to Metres Altitude Converter

Convert trek and flight altitudes between feet and metres, with air pressure, effective oxygen and the altitude band.

Fence Post Spacing Calculator

Calculate post count, even on-centre spacing, hole depth and diameter, and the concrete bags per hole for a fence run.

Feng Shui Room Guide

Informational feng shui layout and element guide for each room, with bagua area, five-element cycle and colour split.

Festival and Gifting Budget Planner

Plan festival spending across gifts, food, travel, decor and clothing, with a gift-tax check and the monthly saving it needs.

Festival Sweet Calorie Calculator

Calories and added sugar per piece for laddoo, barfi, gulab jamun, halwa and more, checked against the WHO free-sugar limit.

Festival Wishes Generator

Ready-to-send wishes for Diwali, Holi, Eid, Christmas, Navratri, Durga Puja, Ganesh Chaturthi, Raksha Bandhan, Karwa Chauth, Onam, Pongal, Lohri, Bihu, Baisakhi, Chhath, Ugadi, Independence Day and Republic Day.

Festive Seasonal Palette Generator

Generate seasonal sale and festive campaign palettes with WCAG contrast checks and copyable CSS variables.

Fetal Kick Counter

Tap to count fetal movements and see how long ten took, using the count-to-ten method with session timing and history.

Fever Fluid Replacement Calculator

Estimate the extra fluid a fever adds to daily maintenance needs, using the 12% per degree Celsius rule (informational).

Fever Temperature Converter

Convert body temperature between Celsius, Fahrenheit and Kelvin and adjust for oral, rectal, ear, forehead or armpit readings.

FFMI Calculator

Fat-free mass index and height-normalised FFMI from weight, height and body fat percentage, with natural-limit context for lifters.

Field Trip Permission Slip Generator

Build a school trip permission slip with supervision ratio, adults needed, per-student cost, medical notes and emergency contacts.

Figma Variable Naming Helper

Design a consistent variable and style naming scheme, generate a starter token set from it, and lint existing names against the rules.

File Checksum Comparator

Hash a local file with SHA-256, SHA-384, or SHA-512 and compare it with a publisher-provided checksum without uploading the file.

File Encoding Conversion Tool

Detect, validate, repair, preview, compare, copy, and download real browser-based file encoding conversions.

File Integrity Manifest Builder

Create a deterministic local SHA-256 manifest for bounded file sets, compare it with a previous manifest, and review byte changes and duplicate digests without uploading files.

File Metadata Explorer

Extract and explore detailed metadata from files — images, documents, audio, video, and more. All processing stays in your browser.

File Metadata Risk Explainer

What hidden metadata photos, documents, scans, screenshots, audio, video, resumes, design files, attachments and code repos leak, and how to strip it.

File Name Sanitiser For Portals

Clean file names of spaces, symbols, accents and reserved words that break government portal and legacy system uploads.

File Signature Verifier

Compare a local file's leading magic bytes with its extension and browser-reported MIME type without uploading the file.

File to Base64

Convert local files into Base64 strings and data URLs without uploading them.

Filler Word Detector

Find the intensifiers, hedges and padding phrases weakening your prose, with a per-word fix and a cleaned-up draft.

Final Grade Calculator

See exactly what you must score on the final exam to hit your target grade, with reverse and weighted-average modes.

Financial Goal Planner

Plan and track multiple financial goals simultaneously. Set targets for retirement, education, travel, and more.

Financial Literacy Quiz for Beginners

A 16-question quiz on interest, inflation, insurance and tax, scored per topic with worked explanations for every answer.

Financial Update

Financial Update allows you to track the stock market trends and get Updates on the latest financial news.

Financial Year and Assessment Year Finder

Map any date to the Indian financial year and assessment year, with the quarter and the statutory filing dates that follow.

Find and Replace Tool

Replace text in bulk, with optional regex and case-insensitive matching.

Find Match

AI-Powered Matchmaking based on interests and personality.

FINDRISC Diabetes Risk Score

Answer eight questions to get your FINDRISC score out of 26 and the matching 10-year type 2 diabetes risk band.

FIRE Calculator

Calculate your Financial Independence / Retire Early number using the 4% rule, SWR, and inflation-adjusted projections.

Fire Extinguisher Selector

Match the right extinguishing agent and size to a kitchen, garage, electrical or workshop risk, with NFPA 10 coverage maths.

Firewood Cord Calculator

Calculate cords of firewood needed for a heating season by species and stove efficiency, plus stack length and weight.

First Aid Kit Builder

Build a first aid kit list with quantities for home, car, office or trek, scaled by group size, trip length and distance from help.

First Car Budget Advisor

Set a safe first-car budget from income, savings and running costs using the 20/4/10 rule — down payment, EMI and on-road price.

Five Paragraph Essay Planner

Split an essay word target into introduction, body and conclusion budgets with sentence counts, Schaffer chunks and a writing time plan.

Fixed Deposit Ladder Planner

Split a lump sum across staggered FD tenures and see each rung's maturity, date and the blended average yield.

Flag Quiz

Master world flags with dynamic quizzes — identify flags, match countries, and test your knowledge with real-time data from 200+ nations.

Flash & Motion Safety Analyzer

Screen bounded, paused samples from a local video for flash-pair and large frame-change cues without uploading the media.

Flash Fiction Word Limit Trainer

Write to a strict 50, 100, 500 or 1000 word limit with live counting, over-budget warnings and a list of words to cut first.

Flash Guide Number Calculator

Solve aperture, distance or guide number from GN = f-number × distance, adjusted for ISO and flash power fraction.

Flashcard Maker

Create, organize, and study flashcards with AI-assisted generation.

Flow Chart Maker

Create flowcharts with ease and share them with your team.

Focus Reading Mask

Dim everything except the line you are reading to hold your focus.

Focus Score Calculator

Calculate your daily focus score based on lifestyle factors, sleep, screen time, and productivity metrics.

Focus Timer

A tool to help you stay focused and manage your time effectively.

Folder Structure Visualizer

Visualize any folder as an interactive tree with icons, search, filters, breadcrumbs, zoom, pan, minimap, and statistics.

Folk Dance of India Explorer

Browse Indian folk dances state by state with the occasion, performers, instruments and costume behind each one.

Font CSS Style Generator

Generate responsive typography CSS with live font previews, gradients, shadows, presets, copy, download, and local history.

Font Glyph & Kerning Inspector

Inspect a font's glyph coverage, kerning pairs and OpenType feature tables.

Font Legibility Comparator

Compare the same private text across local system font stacks, size, measure, weight, and spacing settings without declaring a universal winner.

Font Licence Checker Guide

Check which font licences your project needs across desktop, web, app, ePub, server and broadcast use before you ship.

Font Licence Usage Explainer

Check what a desktop, webfont, app, ePub, server, broadcast or open font licence actually permits before you ship.

Font Pairing by Vibe

Google Font pairings for minimal, luxury, editorial, tech startup, fintech, fitness, food cafe, kids, wedding, retro and brutalist brands with live preview.

Font Subsetter & WOFF2 Converter

Remove unused glyphs and build a web-optimized WOFF2 font subset.

Food Coupon and Meal Card Tax Benefit

Yearly income tax saved on meal cards and food coupons using the Rs 50 per meal exemption, with slab, surcharge and cess.

Food Shelf Life Guide

Look up how long any food keeps in the pantry, fridge or freezer, and check whether leftovers are still safe to eat.

Footage Storage Per Hour Calculator

Plan card and drive space for a shoot: storage per hour by codec, resolution, frame rate and audio track count.

Form Abandonment Simulator

Model form-step drop-off, estimate completion losses, and identify friction points before launch.

Form Builder

Build forms with ease.

Form Correction Window Tracker

Count down an exam form correction window, see which fields that body actually lets you edit, and what the correction costs.

Form Label Auditor

Inspect pasted HTML locally for common form-control naming, label association, group legend, duplicate ID, and reference issues without executing the source.

Formal Informal Word Swapper

Swap casual wording for formal equivalents and back again using 112 register pairs, with risky swaps kept optional.

Fortune Cookie Generator

Generate fun fortune cookie messages with lucky numbers, colors, and smooth card flip animations. Get your daily fortune and wisdom instantly.

Four in a Row

Drop discs and line up four in a row before the AI does — free online strategy board game.

Four Line Notebook Sheet Generator

Print four line, three line, two line or single ruled handwriting sheets at any band height, with rows-per-page worked out for you.

Fractal Explorer

Explore Mandelbrot and Julia fractals with interactive zoom, color controls, and export tools

Fractal Generator

Interactive real-time fractal generator exploring Mandelbrot, Julia sets, Koch Snowflake, Sierpinski Triangle, and Barnsley Fern with deep zoom controls.

Fraction Calculator

Add, subtract, multiply, and divide fractions with step-by-step working, simplification, and decimal conversion.

Fraction Visualizer

Visually explore fraction concepts with interactive pie charts, fraction bars, number lines, and real-time calculations.

Frame Rate Converter

Upload a video and convert its frame rate to any target FPS — 23.976, 24, 25, 29.97, 30, 48, 50, 60, 120 fps and more. Runs entirely in your browser via FFmpeg.wasm.

Frame Rate Retime Calculator

Work out speed percentage, new duration, frame count and audio pitch shift when conforming footage to a different timeline frame rate.

Frames to Seconds Converter

Convert frame counts to seconds and SMPTE timecode at any frame rate, including 29.97 drop-frame, and back again.

Free Emoji Translator

Discover the best free emoji translator online. Convert text to emoji symbols instantly for fun messages, bios, and social media posts.

Freelance Contract Rate Converter

Convert a freelance rate between hourly, daily, weekly, monthly, annual and fixed-project figures using your real billable capacity.

Freelance Rate & Retainer Calculator

Work backwards from the income you want to the hourly, day, and retainer rates you must actually charge.

Freelance Writing Contract Generator

Build a content writing agreement with per-word pricing, revision rounds, kill fee, byline terms and statutory late-payment maths.

Freelancer Advance Tax Planner

Plan quarterly advance tax instalments and due dates on freelance and professional income.

Freelancer Expense Deduction Checklist

Track deductible freelance expenses head by head, flag cash and TDS disallowances, and compare actual expenses against Section 44ADA.

Friend ELO Ladder

Track a persistent Elo rating ladder for friendly matches.

Friendship Challenge

Answer fun questions about your friends, track your score, and see how well you really know each other.

Friendship Meter

Measure the strength, loyalty, and elements of your friendship by detailing shared interests and bonds.

Friendship Score

Measure the strength of your friendship using name alignment algorithms and interactive parameter sliders.

FSSAI Licence Category Selector

Find whether you need FSSAI basic registration, a state licence or a central licence, from turnover, production capacity and activity.

FTP Training Zones Calculator

Seven Coggan cycling power zones in watts from your FTP, with a 20-minute test estimator and a polarised week split.

Fuel Cost Calculator

Work out petrol or diesel cost per km, for a bike, a daily commute or a road trip, split fuel between riders, and see what the car AC adds.

Fuel Price Per Litre Comparator

Normalise fuel prices quoted per litre or per gallon in different currencies to one price per litre and rank them.

Fuel Tank Range Estimator

Estimate how far you can still drive from the fuel gauge reading, tank size, mileage and the reserve you want to keep.

Full and Final Settlement Calculator

Estimate your F&F settlement from pending salary, leave encashment, gratuity, bonus and notice or loan recoveries.

Funny Nickname Generator

Generate hilarious and creative nicknames based on your name, personality, or random themes.

Funny Password Generator - Memorable & Secure

Generate funny, memorable passwords online with adjectives, nouns, numbers, and symbols. Secure yet hilarious password ideas you won't forget.

Furniture Assembly Time Estimator

Estimate how long flat-pack furniture takes to build from part and fastener counts, skill, tools and helpers.

Furniture Layout Planner

Plan room dimensions, arrange furniture pieces, check spacing, save layouts, and export printable floor plans.

Future Baby Generator

Upload parents' photos and enter names to predict baby facial features, genetics, and name recommendations.

Future Child Predictor

Enter parents' names and select physical traits to predict your future child's genetic traits and personality profile.

Future Job Predictor

Advanced career simulation engine. Analyze education, skills, and trend projections to find your path in the future economy.

Future Partner Prediction

Answer compatibility and trait questions to get a fun, detailed profile of your future life partner.

Future Salary Predictor

Project your future earnings and salary growth over time based on expected annual increments.

FX Rate Alerter

Alerts you when a selected currency rate crosses your threshold.