Free Online Tools
190 utilities for images, text, everyday math, and random picks. Each page is a working tool with a unique explanation and worked example. Processing stays in your browser — no account.
Image & Media
Convert formats, compress, crop, resize, and inspect images in your browser.
Image Converter
Convert images between PNG, JPEG, and WebP formats instantly in your browser.
Image Compressor
Reduce image file size without uploading. Adjust quality and compare savings.
Image Resizer
Resize images to exact pixel dimensions or a percentage of the original size.
Image Cropper
Crop images to a custom rectangle or circle. Perfect for profile photos, thumbnails, and avatars.
Aspect Ratio Finder
Find an image’s aspect ratio from its width and height, plus orientation and the closest common ratio (16:9, 4:3, 1:1, and more).
Background Remover
Make solid or simple backgrounds transparent. Adjust tolerance, soft edges, and download a PNG.
Favicon Generator
Create favicons from images, text, or emoji. Download a complete package with ICO, PNG, Apple Touch Icon, Android icons, and web manifest.
JPG to PNG Converter
Convert JPEG images to PNG format with transparency support.
PNG to JPG Converter
Convert PNG images to JPEG format and reduce file size.
PNG to WebP Converter
Convert PNG images to WebP in your browser for smaller web assets — no upload required.
WebP to PNG Converter
Convert WebP images to universally compatible PNG format.
QR Code Generator
Create QR codes for URLs, text, WiFi, and more. Download as PNG.
Color Converter
Convert between HEX, RGB, and HSL color formats with a live preview.
PDF Tools
Merge PDFs, extract pages, or turn images into a PDF — all in your browser.
EXIF Metadata Viewer
Inspect image EXIF data and download a JPEG copy with metadata removed.
WebP to JPG
Convert WebP images to JPEG in your browser.
JPG to WebP
Convert JPEG photos to smaller WebP files.
AVIF to JPG
Convert AVIF images to JPEG when your browser supports AVIF.
AVIF to PNG
Convert AVIF images to PNG with transparency preserved.
SVG to PNG
Rasterize SVG vector files to PNG.
PNG to ICO
Create a multi-size favicon ICO from a PNG image.
TIFF to JPG
Convert TIFF images to JPEG when the browser can decode them.
HEIC to JPG
Convert iPhone HEIC photos to JPEG locally.
HEIC to PNG
Convert HEIC/HEIF images to PNG in the browser.
Image to Text (OCR)
Extract text from images using Tesseract.js in your browser.
Randomizers & Games
Pick winners, generate numbers, shuffle lists, and split teams fairly.
Random Name Picker
Spin the wheel to randomly pick a name or winner from your list.
Random Number Generator
Generate random numbers within a custom range. Pick one or many at once.
Coin Flip
Flip a virtual coin — heads or tails. Fast, fair, and fun.
Dice Roller
Roll virtual dice — choose how many dice and sides. Perfect for games.
List Shuffler
Randomly shuffle any list into a new order.
Team Splitter
Randomly divide a list of names into balanced teams for games, classes, and workshops.
Yes or No Picker
Can't decide? Let fate choose yes or no for you with one click.
Sudoku
Play classic Sudoku with easy, medium, and hard puzzles. Notes, conflict highlights, and keyboard support.
Wordle
Guess the 5-letter word in six tries. Green means correct, yellow means wrong spot.
Spin the Wheel
Spin a customizable wheel to pick a random winner from your list of names or options.
Typing Speed Test
Measure WPM and accuracy with a standard English typing test.
Number Typing Test
Practice typing numbers and symbols with a timed test.
Microphone Test
Check your microphone with a live input level meter in the browser.
Webcam Test
Preview your camera feed to verify video and framing.
Keyboard Test
Press keys to confirm they register — useful for new or cleaned keyboards.
CPS Test
Measure clicks per second in a 5-second challenge — mouse and trackpad tester.
Dead Pixel Test
Full-screen solid colors to help spot stuck or dead pixels on your display.
Device Test Pack
All-in-one mic, webcam, keyboard, CPS, and dead-pixel tests in one page.
Text, Writing & Developer Tools
Compare code, format JSON, test regex, count words, and transform text.
Word Counter
Count words, characters, sentences, and paragraphs. Includes reading time.
Notepad
A simple notepad that autosaves in your browser. Copy or download your notes anytime.
Case Converter
Convert text to uppercase, lowercase, title case, sentence case, and more.
Remove Duplicate Lines
Remove duplicate lines from any list. Optionally sort alphabetically.
Text Diff Compare
Compare two blocks of text side by side and highlight the differences.
Code Comparison Tool
Compare two code snippets side by side — line numbers, added/removed highlighting, and optional whitespace-ignore diff.
Lorem Ipsum Generator
Generate placeholder text for designs, mockups, and prototypes.
JSON Formatter
Format, validate, and minify JSON. Syntax highlighting for easy reading.
JSON Generator
Generate mock JSON data from a custom schema. Perfect for APIs, prototypes, and testing.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 strings back to plain text.
Markdown Editor
Write Markdown and preview the rendered HTML side by side in your browser.
Regex Tester
Test regular expressions against sample text with live match highlighting.
Hash Generator
Generate MD5, SHA-1, SHA-256, and other hashes from text or files.
UUID Generator
Generate random UUID v4 identifiers one at a time or in bulk.
Number Base Converter
Convert between binary, decimal, hex, octal, and text-to-binary in your browser.
Binary to Decimal Converter
Convert binary numbers to decimal with clear place-value steps.
Decimal to Binary Converter
Convert decimal integers to binary using repeated division by 2.
Binary to Hex Converter
Convert binary values to hexadecimal for programming and networking.
Hex to Binary Converter
Convert hexadecimal values to binary bit strings instantly.
Decimal to Hex Converter
Convert decimal numbers to hexadecimal for coding and debugging.
Hex to Decimal Converter
Convert hexadecimal values to everyday decimal numbers.
Decimal to Octal Converter
Convert decimal integers to octal (base 8) with steps.
Octal to Decimal Converter
Convert octal numbers to decimal for math and computing tasks.
Text to Binary Converter
Convert plain text to binary (UTF-8 bytes) for learning and demos.
Binary to Text Converter
Decode binary byte strings back into readable UTF-8 text.
Fancy Text Generator
Turn plain text into bold, italic, script, bubble, and other Unicode styles for social posts.
Bold Fancy Text
Convert letters to mathematical bold Unicode for bios, Discord, and captions.
Italic Fancy Text
Make slanted Unicode italic text for captions and usernames.
Script Fancy Text
Generate elegant script-style Unicode letters for bios and headers.
Small Caps Fancy Text
Create small-cap Unicode text for titles and refined labels.
Upside Down Text
Flip text upside down for jokes, puzzles, and social posts.
Bubble Letter Text
Wrap letters in bubble or circled Unicode for playful headlines.
Monospace Fancy Text
Convert text to monospace Unicode for code-like bios and terminal aesthetics.
Fullwidth Text
Expand characters to fullwidth Unicode for vaporwave-style spacing.
Word Unscrambler
Unscramble letters into valid English words from a built-in dictionary.
Text to Speech
Listen to text with browser voices — adjust rate and pitch.
YAML to JSON
Convert YAML to JSON in your browser.
CSV to JSON
Convert CSV spreadsheets to JSON arrays.
XML to JSON
Convert XML documents to JSON with DOMParser.
JWT Decoder
Decode JWT header and payload (no signature verification).
URL Encoder / Decoder
Encode or decode URI components and full URLs.
HTML Minifier
Remove comments and extra whitespace from HTML.
CSS Minifier
Minify CSS by stripping comments and spaces.
JavaScript Minifier
Basic JS minifier that preserves strings and comments safely.
Calculators & Converters
Finance, tax, ROI, budget, mortgage, and everyday math calculators.
Password Generator
Generate strong, random passwords with customizable length and characters.
Unit Converter
Convert length, weight, temperature, and volume between common units.
BMI Calculator
Calculate your Body Mass Index from height and weight in metric or imperial.
Age Calculator
Calculate your exact age in years, months, and days from your birthdate.
Days Between Dates
Calculate the number of days, weeks, and months between two dates.
Percentage Calculator
Find percentages, calculate increases/decreases, and solve percent problems.
Fraction ↔ Decimal Converter
Convert decimals to simplified fractions and fractions to decimals. Supports mixed numbers.
Tip Calculator
Calculate tip amount and split the bill between multiple people.
Loan Calculator
Calculate monthly payments, total interest, and amortization for loans.
Debt Payoff Calculator
Plan payoff for multiple debts with the avalanche method, extra payments, and a fixed or shrinking monthly budget.
Mortgage Calculator
Free mortgage payment calculator — estimate monthly P&I, total interest, and payments with taxes and insurance.
Compound Interest Calculator
Calculate compound interest and future value with optional monthly contributions. Free online savings growth tool.
ROI Calculator
Free online return on investment calculator — simple ROI and annualized ROI from cost and final value or gain.
Retirement Savings Calculator
Project your retirement nest egg from current savings, monthly contributions, and expected annual return.
Budget Calculator
Build a simple monthly budget — track income vs expenses and see how much you have left over.
Sales Tax Calculator
Add or remove sales tax from a price. Instantly calculate tax amount and totals for any rate.
Income Tax Estimator
Estimate U.S. federal income tax from taxable income using current tax brackets. Free rough calculator — not tax advice.
Currency Converter
Convert between world currencies with a live or manual exchange rate. Fast free FX calculator in your browser.
Salary to Hourly Converter
Convert annual salary to hourly wage (and back). See monthly, biweekly, weekly, and hourly pay instantly.
Inflation Calculator
See how inflation changes purchasing power over time. Compare dollar values between years at any inflation rate.
Dollar Buying Power Calculator
Find out how much money from one year is worth in another using historical U.S. CPI data — what a dollar was worth then vs now.
Refinance Calculator
Compare your current loan to a refinance offer — monthly savings, break-even time, and total interest.
Credit Card Payoff Calculator
Estimate how long to pay off a credit card balance and total interest at your monthly payment and APR.
Down Payment Calculator
Calculate home down payment amount, percent, or purchase price — and see how down payment changes the loan amount.
Amortization Schedule Calculator
Generate a full loan amortization schedule with monthly principal, interest, and balance. Download as CSV.
Net Worth Calculator
Add up assets and liabilities to calculate your net worth. Free personal balance sheet tool — private in your browser.
Emergency Fund Calculator
Find your emergency fund target from monthly expenses and months of coverage. Track how much you still need.
401(k) Contribution Calculator
Estimate employee and employer 401(k) contributions with match rules, plus optional growth projection.
APR Calculator
Estimate the true APR of a loan including fees and points — compare stated interest rate vs real cost.
Discount & Markup Calculator
Calculate sale price after a discount, markup from cost, or selling price from desired profit margin.
Break-Even Calculator
Find break-even units and revenue from fixed costs, variable cost per unit, and selling price.
Timezone Converter
Convert a date and time between time zones and check the time around the world.
Stopwatch & Timer
Run a stopwatch with laps or set a countdown timer — all in your browser.
Days From Today
Add or subtract days, weeks, or business days from today and see the resulting calendar date.
Profit Margin Calculator
Calculate selling price from cost and desired profit margin — free online margin tool.
Ratio & Proportion Calculator
Solve for the missing value in a proportion a/b = c/d with clear step-by-step math.
LCM Calculator
Find the least common multiple of two or more integers and see the calculation steps.
GCF Calculator
Find the greatest common factor (GCD) of numbers with Euclidean algorithm steps.
Final Grade Calculator
Find what score you need on the final exam to reach your target course grade.
Weighted Grade Calculator
Combine category scores and weights into your overall course average.
Test Grade Calculator
See what score you need on your next test to hit a target overall grade.
GPA Calculator
Calculate high school or college GPA with weighted or unweighted scales.
Prime Number & Factor Calculator
Check if a number is prime and list its factors or prime factorization with steps.
Slope Calculator
Find the slope between two points, see the line equation, graph, and steps.
Area of a Circle Calculator
Calculate circle area from radius with the πr² formula and steps.
Area of a Rectangle Calculator
Calculate rectangle area from length and width with clear steps.
Area of a Triangle Calculator
Calculate triangle area from base and height with step-by-step math.
Area of a Trapezoid Calculator
Calculate trapezoid area from two bases and height with steps.
Volume of a Sphere Calculator
Calculate sphere volume from radius using (4/3)πr³ with steps.
Volume of a Cylinder Calculator
Calculate cylinder volume from radius and height with steps.
Volume of a Cone Calculator
Calculate cone volume from radius and height with steps.
Volume of a Cube Calculator
Calculate cube volume from side length with steps.
Volume of a Rectangular Prism Calculator
Calculate rectangular prism (box) volume from length, width, and height.
Volume of a Pyramid Calculator
Calculate pyramid volume from base area and height with steps.
Hours / Time Card Calculator
Add daily start, end, and break times to total hours worked for a pay period.
Military Time Converter
Convert between 12-hour and 24-hour (military) time formats.
Scientific Calculator
Browser scientific calculator with trig, logs, powers, roots, and parentheses.
Paycheck Calculator
Estimate net pay with simplified federal withholding, FICA, and optional flat state tax.
Etsy Fee Calculator
Estimate Etsy listing, transaction, and payment processing fees on a sale.
Amazon FBA Fee Calculator
Rough Amazon referral and FBA fulfillment fee estimate for a product price.
eBay Fee Calculator
Estimate eBay final value and payment processing fees on your sale price.
PayPal Fee Calculator
Calculate PayPal goods-and-services fees from sale amount (rates as of 2026).
Health & Fitness
Calorie, TDEE, BMR, macros, height comparison, and pregnancy due-date tools.
Height Comparison
Compare two heights side by side in feet or centimeters.
TDEE Calculator
Estimate total daily energy expenditure using Mifflin–St Jeor BMR and activity multipliers.
BMR Calculator
Calculate basal metabolic rate (calories at rest) with the Mifflin–St Jeor equation.
Macro Calculator
Split daily calories into protein, carbs, and fat grams from your target macro percentages.
Pregnancy Due Date Calculator
Estimate due date and weeks pregnant from last period or conception date.
Home & DIY
Concrete, paint, tile, fence, deck, mulch, roof pitch, and square-footage calculators.
Concrete Calculator
Estimate cubic yards of concrete for a slab from length, width, and depth.
Square Footage Calculator
Calculate room or floor area in square feet from length and width.
Roof Pitch Calculator
Convert rise and run to pitch ratio, roof angle, and approximate rafter length.
Deck Board Calculator
Estimate deck boards and linear feet from deck size, board width, and gap.
Mulch Calculator
Calculate mulch volume in cubic yards and bag count from bed dimensions.
Paint Calculator
Estimate gallons of paint from wall area, coats, and coverage per gallon.
Tile Calculator
Count floor tiles needed from room size, tile dimensions, and waste allowance.
Fence Calculator
Estimate fence posts and panel sections from length and spacing.
Audio & Video
Convert video to MP3, compress video, and trim audio for ringtones in your browser.
Video to MP3
Extract audio from a video file and download MP3 in your browser with ffmpeg.wasm.
MP4 to MP3
Convert MP4 (and other video) files to MP3 audio locally — no upload to a server.
Video Compressor
Compress video with H.264 CRF and optional scaling using ffmpeg.wasm in the browser.
Audio Cutter
Trim audio with start/end times and fade in/out, then export a WAV download.
Generators
Invoices, signatures, memes, name ideas, calendars, and color palettes — built locally.
Band Name Generator
Random band name ideas for your next project.
Podcast Name Generator
Catchy podcast title ideas in one click.
D&D Name Generator
Fantasy character names for tabletop RPGs.
Clan Name Generator
Clan and guild names for games and teams.
Gamer Tag Generator
Unique gamer tag and username ideas.
Business Name Generator
Startup and business name ideas.
Baby Name Generator
Inspiration for baby name combinations.
Pet Name Generator
Fun pet name ideas for dogs, cats, and more.
Color Palette Generator
Sample dominant colors from an uploaded image.
Contrast Checker
Check WCAG contrast ratio between text and background colors.
CSS Gradient Generator
Build linear gradients and copy CSS.
Invoice Generator
Create invoices with line items and export PDF.
Receipt Generator
Simple receipt maker with PDF download.
Quote Generator
Build client quotes with totals and PDF export.
Signature Generator
Draw or type a signature and download PNG.
Email Signature Generator
Gmail and Outlook HTML email signature builder.
Meme Generator
Add top and bottom text to an image and download.
Printable Calendar
Pick a year and month, then print a clean calendar page.
Printable Calendar 2026
Print-friendly calendar for the year 2026.
Printable Calendar 2027
Print-friendly calendar for the year 2027.
January 2027 Calendar
Printable January 2027 monthly calendar.
February 2027 Calendar
Printable February 2027 monthly calendar.
March 2027 Calendar
Printable March 2027 monthly calendar.
April 2027 Calendar
Printable April 2027 monthly calendar.