Unit Converter
Convert length, weight, temperature, area, volume, and data.
Millimeter (mm) → Kilometer (km)0.000001
1 Millimeter (mm) = 0.000001 Kilometer (km)
Press Escape while editing a field to reset.
What is the Unit Converter?
A unit converter changes a value from one unit of measurement to another across categories like length, weight, temperature, area, volume, and digital data. Pick a category, enter a value, and choose your units for an instant, accurate conversion.
Formula & how it works
Result = Value × (from-unit factor) ÷ (to-unit factor)Each unit stores a factor relative to a base unit within its category. Temperature uses dedicated formulas because its scales have offsets.
Example
Convert 10 miles to kilometers.
Inputs
- Value
- 10 miles
- To
- kilometers
Results
- Result
- ≈ 16.09 km
1 mile = 1.609344 km, so 10 miles = 16.09344 km.
How to use this calculator
- 1Pick a category (length, weight, temperature, and more).
- 2Enter the value to convert.
- 3Choose the 'from' and 'to' units.
- 4Use the swap button to reverse the conversion.
Frequently asked questions
How many kilometers are in a mile?+
One mile equals approximately 1.609 kilometers.
How do I convert Celsius to Fahrenheit?+
Multiply the Celsius value by 9/5 and add 32. The temperature converter does this automatically.