Browse 21 categories with 254+ free tools
12 tools
Convert between units of length, weight, temperature, speed, volume, area, data, time, pressure, energy, fuel efficiency, and angles.
18 tools
Calculate percentages, fractions, roots, logarithms, prime numbers, and convert between number bases and formats.
23 tools
Count words, convert case, compare text, sort lines, generate Lorem Ipsum, and transform text in various ways.
10 tools
Convert color formats, generate palettes, check contrast, create gradients, and explore color combinations.
30 tools
Format JSON, encode/decode Base64 and URLs, test regex, decode JWTs, generate UUIDs and hashes, and minify code.
Calculate interest, loans, mortgages, tips, ROI, profit margins, discounts, and convert salaries.
Calculate BMI, calories, body fat, macros, heart rate zones, ideal weight, and running pace.
15 tools
Calculate age, date differences, countdowns, timezone conversions, week numbers, and working days.
19 tools
Convert images to Base64, generate QR codes, resize images, extract colors, and create favicons - all client-side.
Generate passwords, check strength, create hashes, encrypt text, detect IP info, and parse user agents.
Flip coins, roll dice, pick random names, generate lottery numbers, spin decision wheels, and create teams.
8 tools
Calculate Ohm's law, resistor color codes, power consumption, voltage dividers, and LED resistors.
Convert IPv4 and IPv6 addresses, calculate subnets, generate MAC addresses, validate IBANs, and parse phone numbers.
Generate meta tags, look up HTTP status codes and MIME types, detect keycodes, edit HTML, and create ULIDs.
4 tools
Convert Docker run commands to Compose, browse Git and regex cheatsheets, and build cron expressions visually.
Merge, split, rotate, compress, protect, and extract text from PDF files - all processed in your browser.
6 tools
Convert between CSV, Excel, ZIP, Markdown, and Word formats. Create and extract archives - all client-side.
7 tools
Calculate grades, GPA, typing speed, reading speed, and readability scores. Create flashcards for studying.
Calculate standard deviation, mean, median, mode, probability, combinations, normal distribution, and sample sizes.
5 tools
Estimate materials for concrete, paint, tile, fence, and wallpaper projects. Calculate quantities and coverage.
Convert cooking measurements, scale recipes, and convert between shoe, clothing, and ring sizes worldwide.