Standard Unit Converters
Convert length, weight, temperature, speed and area units.
1000
1 km = 1000 m
1 km in all length units
Kilometre (km)
1
Metre (m)
1000
Centimetre (cm)
100000
Millimetre (mm)
1000000
Micrometre (µm)
1000000000
Nanometre (nm)
1000000000000
Mile (mi)
0.6213711922
Yard (yd)
1093.613298
Foot (ft)
3280.839895
Inch (in)
39370.07874
Nautical mile (nmi)
0.5399568035
Convert between hundreds of units across 11 categories — length, weight, temperature, volume, area, speed, time, pressure, energy, power, and angle — all in one tool.
Key Features
11 Categories
Switch between length, weight, temperature, volume, area, speed, time, pressure, energy, power, and angle in one click.
Live Conversion
Results update as you type — no submit button required.
Swap Button
Instantly reverse from→to direction without retyping.
All-Units Table
See every unit in the current category converted simultaneously with Copy buttons.
Temperature Special Handling
Correct offset-based conversion for °C, °F, K and °Rankine.
How to Use
- 1Choose a category from the tabs.
- 2Select From and To units, then type a value.
- 3Use the all-units table for a full overview or the Swap button to reverse.