Tools
Free, fast and private. Everything runs in your browser, so nothing you type leaves your computer.
Formatters, converters and encoders for everyday coding.
Convert Unix timestamps to human-readable dates and back, in your local time or UTC.
Pretty-print, minify and validate JSON, with the exact position of any error.
Quick calculators for everyday numbers.
Work out your body mass index from height and weight, in metric or imperial units.