Miles to kilometers conversion table
| Miles | Kilometers |
|---|---|
| 0.1 mi | 0.1609 km |
| 0.25 mi | 0.4023 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 |
| 10 mi | 16.0934 km |
| 15 mi | 24.1402 km |
| 20 mi | 32.1869 km |
| 25 mi | 40.2336 km |
| 30 mi | 48.2803 km |
| 40 mi | 64.3738 km |
| 50 mi | 80.4672 km |
| 75 mi | 120.7008 km |
| 100 mi | 160.9344 km |
| 200 mi | 321.8688 km |
| 500 mi | 804.672 km |
| 1,000 mi | 1,609.344 km |
How to convert miles to kilometers
- Take the distance in miles.
- Multiply it by 1.609344.
- The result is the distance in kilometers.
Example: 26.2 miles × 1.609344 = 42.1648 km — almost exactly a marathon (the official marathon is 42.195 km, or 26.2188 miles).
Quick mental math: miles to km without a calculator
- Multiply by 1.6 (or add 60%): 50 mi → 50 + 30 = 80 km (exact: 80.47 km).
- Fibonacci trick: consecutive Fibonacci numbers are roughly miles → km: 3 → 5, 5 → 8, 8 → 13, 13 → 21, 21 → 34, 34 → 55.
- Speed signs: 50 mph ≈ 80 km/h, 62 mph ≈ 100 km/h, 70 mph ≈ 113 km/h.
Why is a mile 1.609344 km?
Since the 1959 international yard and pound agreement, the yard is defined as exactly 0.9144 m. A mile is 1,760 yards, so 1 mile = 1,760 × 0.9144 m = 1,609.344 m exactly. That is why this converter gives exact results rather than approximations.
Other “miles” are different units: the nautical mile used at sea and in aviation is 1.852 km, the old US survey mile was 1.609347 km (retired at the end of 2022), and the Scandinavian mil used colloquially in Sweden and Norway is 10 km.
Where miles are still used
Road distances and speed limits are posted in miles in the United States and the United Kingdom (plus a few territories). Almost everywhere else uses kilometers, which is why travelers, runners following international race results, and anyone buying a car from abroad often need to convert. Running is a special case: even in the US, races are mostly named in kilometers (5K, 10K) while training paces are often given per mile — see the running pace calculator.
Frequently asked questions
How many kilometers are in a mile?
There are exactly 1.609344 kilometers in one mile.
How do I convert miles to km quickly?
Multiply by 1.6 for a close estimate, or by 1.609344 for the exact value. For example, 10 miles ≈ 16 km (exactly 16.09344 km).
Is a mile longer than a kilometer?
Yes. A mile is about 1.6 times longer than a kilometer; one kilometer is 0.621371 miles.
How many km is a marathon?
A marathon is 42.195 km, which is 26.2188 miles.
How far is 5 miles in km?
5 miles is 8.04672 km.