About the Miles to Kilometers Converter
Convert miles (mi) to kilometers (km) instantly. Includes the exact conversion factor, formula and a quick reference table.
Also known as: mi to km, Miles to Kilometers, convert Miles to Kilometers, mi to km, mi to km, miles to kilometers.
How to use this calculator
- Enter value in miles.
- The result updates instantly as you type — press Calculate (or Enter) at any time.
- Open “Step-by-step” to see how the answer was worked out.
- Use Copy result or Share to save the answer or send a link with your inputs.
Formula
km = mi × 1.609344
Worked example
Using the values pre-filled in the calculator above:
- Value in miles = 10 mi
the calculator returns:
- Kilometers: 16.09344 km
- Nanometers: 16,093,440,000,000 nm
- Micrometers: 16,093,440,000 µm
- Millimeters: 16,093,440 mm
Working
10 mi × 1.609344 = 16.09344 km