Beautifully simple utility tools
Fast, free utilities that work instantly in your browser. No accounts, no fluff — just tools that do one thing well.
Calculators
7Tip Calculator
Calculate tip and split the bill between any number of people.
Aspect Ratio Calculator
Find the aspect ratio of any dimensions or scale width/height while preserving proportions.
BMI Calculator
Calculate your Body Mass Index from height and weight. Metric and imperial units, WHO categories.
Percentage Calculator
Calculate percentages, percentage change, what % X is of Y, and add or subtract a percentage from any number.
Age Calculator
Calculate your exact age in years, months and days. See total days lived and your next birthday countdown.
Salary to Hourly Calculator
Convert annual, monthly, biweekly, weekly, daily or hourly salary to any other pay period. Adjustable working hours.
Online Stopwatch
Start, stop and lap a stopwatch with centisecond precision. Records lap times in a scrollable list.
Developer
6Diff Checker
Compare two texts and instantly see what changed line by line.
Base64 Encoder / Decoder
Encode text to Base64 or decode Base64 back to plain text. Supports standard and URL-safe alphabets.
JSON Formatter
Format, validate and minify JSON instantly. Paste raw JSON and get it beautifully indented.
Unix Timestamp Converter
Convert Unix epoch timestamps to readable dates, or any date to a Unix timestamp. Live current time.
URL Encoder / Decoder
Percent-encode special characters for safe use in URLs, or decode encoded strings back to plain text.
Markdown Previewer
Write or paste Markdown and see the rendered HTML output live. Split view, copy HTML, GitHub-compatible.
Generators
5Password Generator
Generate secure, random passwords with custom length and characters.
UUID Generator
Generate cryptographically secure v4 UUIDs — one or in bulk up to 100 at once.
Lorem Ipsum Generator
Generate paragraphs, sentences or words of Lorem Ipsum placeholder text. Classic or random, copy instantly.
Random Number Generator
Generate secure random numbers in any range. Includes dice roller (d4–d100) and random list picker.
Fantasy Name Generator
Generate fantasy names for elves, dwarves, orcs, humans, dark elves and dragons. Choose race and gender, copy instantly.
Converters
3Music
3Tuner
Free chromatic tuner for any instrument. Detects pitch via microphone and shows note, cents and frequency in real time. No download needed.
Rhythm Trainer
Free rhythm trainer for students and teachers. Generate random rhythm exercises in standard notation with playback, metronome and count-off. No account needed.
Online Metronome
Free browser metronome with adjustable BPM, tap tempo, time signature and visual beat indicator.
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