Miles to km
Convert miles (mi) to kilometers (km) instantly. Type in either box — the other updates automatically.
Tip: use . for decimals
1 mile = 1.609344 km
Formula: km = mi × 1.609344 and mi = km ÷ 1.609344.
Quick conversions
Common mile distances converted to kilometers.
FAQ
Why is 1 mile = 1.609344 km?
The international mile is defined as 1,609.344 meters. Since 1 km = 1,000 meters, that becomes 1.609344 km.
Can I share a pre-filled value?
Yes: use ?mi=10 or ?km=5 in the URL.