Unit Converter
Everyday CalculatorsConvert between units instantly — length, weight, area, volume, speed, time, data storage, and temperature.
Result
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What This Converter Supports
Length
mm, cm, m, km, inches, feet, yards, miles
Weight
mg, g, kg, tonnes, ounces, pounds, stone
Area
sq m, sq km, sq ft, sq yd, acres, hectares, sq mi
Volume
ml, litres, cubic m, tsp, tbsp, cups, fl oz, gallons
Speed
m/s, km/h, mph, knots, ft/s
Time
seconds, minutes, hours, days, weeks, months, years
Data
bits, bytes, KB, MB, GB, TB
Temperature
Celsius, Fahrenheit, Kelvin
Worked Example — 100 mm to inches
Frequently Asked Questions
Common Mistakes to Avoid
- Not every unit type is supported. Torque, pressure, density, power, and currency aren't included — only the eight categories above.
- Temperature doesn't scale like the others. Celsius, Fahrenheit, and Kelvin use their own conversion formulas, not a shared base-unit multiplier the way length or weight do.
References
- International System of Units (SI)
- National Institute of Standards and Technology (NIST)
Last reviewed July 2026
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