Instant Unit Conversion
Convert Miles to Kilometers (mi to km)
Exact formula, conversion factors, live calculator, and reference charts for miles to kilometers.
Method reviewed:Exact defined factors — international yard and pound (1959), US customary gallon and cup, SI — the values NIST SP 811 lists · reviewed September 2026 · Source: NIST SP 811
1 mile is equal to exactly 1.609344 kilometers. To convert miles to km, multiply your mileage by 1.609344.
Live Miles to Kilometers Calculator
km = mi × 1.609344Open full length converter →Miles to Kilometers Conversion Table
Quick reference conversion chart from 1 to 100 miles.
| Miles (mi) | Kilometers (km) | Mathematical Formula |
|---|---|---|
| 1 mi | 1.6093 km | 1 × 1.60934 |
| 2 mi | 3.2187 km | 2 × 1.60934 |
| 5 mi | 8.0467 km | 5 × 1.60934 |
| 10 mi | 16.0934 km | 10 × 1.60934 |
| 15 mi | 24.1402 km | 15 × 1.60934 |
| 20 mi | 32.1869 km | 20 × 1.60934 |
| 25 mi | 40.2336 km | 25 × 1.60934 |
| 50 mi | 80.4672 km | 50 × 1.60934 |
| 75 mi | 120.7008 km | 75 × 1.60934 |
| 100 mi | 160.9344 km | 100 × 1.60934 |
Frequently Asked Questions
How many km in a mile?
There are exactly 1.609344 kilometers in 1 international statute mile.
How do you convert miles to km mentally?
Multiply by 1.6 for a quick estimate (60 mph × 1.6 = 96 km/h; exact is 96.56 km/h). For a closer result, multiply by 1.61.
Is a 5K run really 5 kilometers?
Yes — a 5K is 5 km, which is 3.10686 miles (usually called 3.1 miles). The "K" is shorthand for kilometers, the standard race distance worldwide.