Convert tools
Numbers, dates, colours and units.
Timestamp ConverterUnix seconds ↔ ISO date ↔ local time.
Number Base ConverterBinary, octal, decimal and hex at once.
Roman NumeralsNumbers ↔ Roman numerals (1–3999).
Colour ConverterHEX, RGB, HSL and a live swatch.
Byte Size ConverterBytes ↔ KB ↔ MB ↔ GB, binary and decimal.
Number to WordsWrite a number out in English words.
PX ↔ REM ConverterConvert pixels and rem at any root font size.
Colour PaletteGenerate shades and tints from one colour.
Temperature ConverterCelsius, Fahrenheit and Kelvin at once.
Degrees ↔ RadiansAngle conversion with sin/cos/tan values.
Colour Contrast (WCAG)Contrast ratio between text and background, AA/AAA.