Miles to Kilometers
Type miles (mi), see kilometers (km).
By Akash Yadav Updated 23 September 2026
Type a number above to see the answer.
Or tap a number:
The formula
How to convert miles to kilometers
To change miles into kilometers, multiply by 1.609344.
kilometers = miles × 1.609344
Going the other way: miles = kilometers × 0.621371192237
1 mile = 1.609344 kilometers. This factor is the exact definition of the unit, not a rounded estimate.
Worked example
You have 5 miles. Multiply by 1.609344. 5 × 1.609344 = 8.0467 km.
Common values
Miles to kilometers conversion table
| Miles (mi) | Kilometers (km) |
|---|---|
| 0.5 mi | 0.8047 km |
| 1 mi | 1.6093 km |
| 2 mi | 3.2187 km |
| 3 mi | 4.828 km |
| 5 mi | 8.0467 km |
| 6.2 mi | 9.9779 km |
| 10 mi | 16.0934 km |
| 13.1 mi | 21.0824 km |
| 15 mi | 24.1402 km |
| 20 mi | 32.1869 km |
| 26.2 mi | 42.1648 km |
| 50 mi | 80.4672 km |
| 100 mi | 160.9344 km |
| 250 mi | 402.336 km |
| 500 mi | 804.672 km |
Before you rely on it
This factor is exact
1 mile is exactly 1.609344 km. The international mile is 5280 feet and the foot is exactly 0.3048 m, both fixed by the 1959 yard and pound agreement, so multiplying by 1.609344 introduces no error at all.
Race distances are the trap. A marathon is defined in kilometers, 42.195 km, and "26.2 miles" is the rounded version: 26.2 miles converts to about 42.16 km, not quite a marathon. Converting a rounded mile figure back gives a rounded kilometer answer.
The nautical mile is a different unit, exactly 1.852 km, used at sea and in the air. The US survey mile found in older American land records is about 3 mm longer than the international mile and was retired for new surveying work at the start of 2023. This page uses the international mile.
Multiplying by 1.6 is a fair estimate. It runs about half a percent low, so 100 miles comes out at 160 km rather than the true 160.93.
Common questions
Frequently asked questions
How many km is 1 mile?
1 mile is exactly 1.609344 km, by definition of the international mile.
How many km is 3 miles?
3 miles is about 4.83 km — a little under a 5K.
How many km is 5 miles?
5 miles is about 8.05 km.
How many km is 10 miles?
10 miles is about 16.09 km.
How many km is 26.2 miles?
26.2 miles is about 42.16 km. The official marathon distance is 42.195 km; 26.2 miles is its rounded equivalent.
How many km is 100 miles?
100 miles is exactly 160.9344 km.
Keep going
Related converters
Every factor on this page is listed in our conversion methodology.