Miles to Kilometers Converter
A fast online tool to convert miles to kilometers and kilometers to miles in a single field.
Type a value in either field — conversion is instant
About converting miles to kilometers
The mile is a length unit common in the United States and the United Kingdom, while the kilometer is used across most of the world. This calculator converts miles to kilometers and kilometers to miles in both directions.
The conversion is based on a simple ratio: 1 statute mile equals 1.60934 kilometers, and 1 kilometer equals about 0.621371 miles. Just enter a number in either field.
All calculations run locally in your browser and update instantly — nothing is uploaded, and the result is recomputed on the fly.
Why use this converter
Both directions at once
Convert miles to kilometers and kilometers to miles in one field with no mode switching.
Accurate results
Uses the official factor of 1.60934, so values match the reference standard.
Instant conversion
Results appear as you type, with no buttons or waiting.
Frequently asked questions
How many kilometers are in a mile?
One statute mile equals 1.60934 kilometers. For example, 5 miles is about 8.05 km.
How do I convert kilometers to miles?
Divide the number of kilometers by 1.60934, or multiply by 0.621371. For example, 10 km ≈ 6.21 miles.
Which mile does this use?
It uses the international statute mile (1609.34 m). The nautical mile (1852 m) is not included here.
Can I convert decimal values?
Yes, enter any number, including decimals such as 2.5 miles or 13.7 km, for an accurate result.
Is my data stored?
No, all calculations happen locally in your browser and nothing is sent to a server.