Unit Converter
Length, mass, temperature, volume, speed and more
How it works
Pick a category — length, mass, temperature, area, volume, speed, time or digital storage — enter a value and choose its unit, and every other unit in that category updates at once. Temperature uses exact formulas (so 100°C = 212°F = 373.15 K); the rest convert through a common base unit.
Frequently asked
Which categories are covered?
Length, mass/weight, temperature, area, volume, speed, time and digital storage, with both metric and imperial units.
Does it convert temperature correctly?
Yes — Celsius, Fahrenheit and Kelvin use their exact formulas rather than a simple multiplier.