Miles to Kilometers Converter
Convert miles (mi) to kilometers (km) instantly and accurately.
Convert miles to kilometers instantly with this free online tool. Type a distance in miles and see the equivalent in kilometers right away, or type kilometers to convert back. Everything runs in your browser — no sign-up and no waiting.
How to convert miles to kilometers
To convert miles to kilometers, multiply the number of miles by 1.609344, because one mile is defined as exactly 1.609344 kilometers. For example, 10 miles × 1.609344 = 16.09344 kilometers. This converter does the math for you and updates as you type.
- Enter the distance in miles in the first field.
- Read the result in kilometers in the second field.
- Type into the kilometers field to convert in the other direction.
Why use this miles to kilometers converter?
- 100% free with no ads, sign-up, or limits.
- Instant, two-way conversion as you type.
- Accurate to the international mile (exactly 1.609344 km).
- Runs entirely in your browser.
Frequently asked questions
What is the formula to convert miles to kilometers?
Kilometers = miles × 1.609344. Equivalently, divide kilometers by 1.609344 to get miles.
How many kilometers is 1 mile?
1 mile is exactly 1.609344 kilometers, often rounded to 1.61 km.
How do I convert 10 miles to kilometers?
Multiply 10 by 1.609344 to get 16.09344 kilometers.