Converters Tools
3 free converters tools, all running privately in your browser.
These free converters transform data between formats - units, timestamps, colors, CSV and JSON, number bases, Roman numerals, time zones, and more. Each conversion happens instantly in your browser as you type, with no uploads and no signup.
Format conversion is one of those small tasks that interrupts real work constantly. Having accurate, instant converters in one place - using exact conversion factors rather than rounded approximations - saves time and prevents the subtle errors that creep in when converting by hand.
Unit Converter
Convert length, weight, and temperature units.
Binary Converter
Convert between binary, decimal, and hex.
Roman Numeral Converter
Convert between numbers and Roman numerals.
Frequently asked questions
Are the conversions exact?
Yes. These tools use exact or full-precision conversion factors (for example, 1 inch = 2.54 cm exactly), so results are suitable for precise work, not just rough estimates.