Unit Converter

Length, weight, temperature, volume, area, speed, time, and data.

About this converter

Select a category, enter your value, choose your source and target units, and click Convert. Results update automatically when you change units. Conversion results are shown to 8 significant figures.

Supported categories

Length — meters, km, miles, yards, feet, inches, nautical miles, and more
Weight — kg, grams, pounds, ounces, tons, stone
Temperature — Celsius, Fahrenheit, Kelvin
Volume — liters, ml, US gallons, cups, fluid oz, cubic meters
Area — square meters, km², ft², acres, hectares
Speed — m/s, km/h, mph, knots
Time — seconds, minutes, hours, days, weeks, months, years
Data — bytes, KB, MB, GB, TB, bits, kilobits, megabits

FAQ

Why is temperature conversion different from other categories?: Temperature uses offset formulas (not just multiplication), so Celsius → Fahrenheit requires (°C × 9/5) + 32, not a simple ratio.
How accurate are the conversions?: Results are accurate to 8 significant figures using standard conversion factors.