Unit Converter
Convert between length, weight, temperature, volume, speed, area, and time units instantly.
All conversions
Millimeter (mm)
1,000Centimeter (cm)
100Kilometer (km)
0.001Inch (in)
39.370079Foot (ft)
3.28084Yard (yd)
1.093613Mile (mi)
0.000621Nautical Mile (nmi)
0.00054Ctrl+Enter to runCtrl+Shift+C to copy
Learn More
Unit Converter: Length, Weight, Temperature & More
Convert between metric and imperial units instantly. Learn about unit categories, conversion formulas, and precision handling.
Why Unit Conversion Matters
The world uses different measurement systems — metric in most countries, imperial in the United States, and various specialized units in science and engineering. Converting between these systems accurately is essential for international collaboration, scientific research, cooking, fitness tracking, and everyday life.
5 min readRead full guide