Converters
Unit Converter
Convert length, weight, area, volume and speed between units.
Temperature Converter
Convert temperatures between Celsius, Fahrenheit and Kelvin.
Color Converter (HEX/RGB/HSL)
Convert colors between HEX, RGB and HSL and preview them live.
Number Base Converter
Convert numbers between binary, octal, decimal and hexadecimal.
Roman Numeral Converter
Convert between Arabic numbers (1–3999) and Roman numerals.
Byte Size Converter
Convert between B, KB, MB, GB, TB and PB.
Time Zone Converter
Convert a date and time from one time zone to another.
Numbers to Words
Spell out a number in English words.
Fraction ⇄ Decimal Converter
Convert fractions to decimals and decimals to fractions.
Scientific Notation Converter
Convert between decimal numbers and scientific notation.
Duration Converter
Convert between seconds, minutes, hours, days and more.
Cooking Measurement Converter
Convert cups, tablespoons, milliliters and more.
ASCII Table
Full ASCII table with decimal, hex, octal and binary.
RGB to CMYK Converter
Convert RGB colors to CMYK for print.
Angle Converter
Convert degrees, radians, gradians and more.
Data Rate Converter
Convert bit and byte transfer rates.
Pressure Converter
Convert bar, psi, pascal, atm and more.
JSON to TOML Converter
Convert JSON to TOML with nested tables, arrays and array-of-tables support, right in your browser.
CSV to YAML Converter
Convert CSV data to a YAML list of objects with automatic number/boolean detection.
Words to Number Converter
Turn English number words like 'two thousand and forty-five' into their numeric value.
Shoe Size Converter
Convert shoe sizes between US, UK, EU and CM for men's and women's sizing.
Fuel Economy Converter
Convert fuel economy between MPG (US), MPG (UK), L/100km and km/L instantly.