20 free tools. Instant results. Zero tracking.
Evaluate math expressions safely
Convert between common units (km↔mi, kg↔lbs, C↔F, etc.)
Convert between hex, RGB, and HSL color codes
Encode or decode Base64 strings
Percent-encode or decode URLs
Convert Unix timestamps to human dates and vice versa
Generate secure random passwords
Generate random UUIDs (v4)
Generate MD5, SHA1, SHA256, SHA512 hashes
Generate placeholder text paragraphs
Roll dice in standard notation
Flip one or more coins
Convert between Roman numerals and decimal
Convert between binary, decimal, hex, and octal
Calculate Body Mass Index from weight and height
Calculate tip amounts and split bills
Count words, characters, sentences, and paragraphs
Format, validate, and prettify JSON data
Test regular expressions against text
Generate QR codes from text or URLs