UtilityBaseCalculators
Miles to Kilometers Converter
Convert miles to kilometers instantly, both ways, with running and driving references.
Updated July 10, 2026
How to use the miles to kilometers converter
- 1Type a distance in miles.
- 2Read the kilometers instantly.
- 3Or type kilometers to convert back.
- 4Use the references for run and drive distances.
Common uses
- Converting a running distance
- Reading a speed limit abroad
- Planning a road trip in metric
- Converting a race distance
Frequently asked questions
How do I convert miles to kilometers?
Multiply the number of miles by 1.609344. For example, 5 miles × 1.609344 = about 8.05 km. To convert kilometers to miles, divide by 1.609344.
How many kilometers is a marathon?
A marathon is 26.2 miles, which is about 42.2 kilometers. A half marathon of 13.1 miles is about 21.1 km.
Is the conversion exact?
Yes. One mile is defined as exactly 1.609344 kilometers, so the conversion is precise, not an approximation.
About this tool
The miles to kilometers converter changes distance between miles and km as you type — edit either box to convert both ways. One mile equals exactly 1.609344 kilometers, so you multiply miles by 1.609344 to get kilometers, or divide to go back. The reference table includes running distances like the half marathon (13.1 mi) and full marathon (26.2 mi). Everything is calculated in your browser.
Like most tools on UtilityBase, the miles to kilometers converter runs entirely in your browser — nothing you enter is uploaded or stored on a server. It's free to use with no account required. Browse more calculators here.
Was this tool helpful?
Related tools
KM to Miles Converter
Convert kilometers to miles and back — edit either box, both update.
Calculators
Distance Calculator
Straight-line distance between any two places — miles, km, and flight time.
Calculators
Running Pace Calculator
Pace per mile/km, speed, and race finish times from any distance and time.
Calculators
Unit Converter
Convert length, weight, temperature, volume, speed, and data units instantly.
Calculators
Mortgage Calculator
Monthly payment with taxes, insurance, PMI, and a full amortization schedule.
Calculators
Scientific Calculator
Full scientific calculator — trig, logs, powers, factorials, with keyboard input.
Calculators