Free tools, zero clutter.

Find a percentage of a number, what % one number is of another, and more.

Calculate your Body Mass Index from height and weight. Metric and imperial.

Generate secure random numbers, flip coins, and roll dice.

Count words, characters, sentences, paragraphs, and estimated reading time.

Calculate tip amount, total bill, and per-person split instantly.

Calculate your exact age in years, months, and days.

Encode text to Base64 or decode Base64 back to plain text.

Encode text for URLs or decode percent-encoded strings back to plain text.

Format and prettify JSON, or minify it for production. Validates JSON instantly.

Find the next launch window from Earth to Mars with a live countdown and timetable.

Generate SHA-256, SHA-384, and SHA-512 cryptographic hashes from text.

Convert numbers between binary, octal, decimal, and hexadecimal.

Convert between Unix timestamps and human-readable dates. Live clock included.