Miles per hour to Kilometers per hour
Convert miles per hour to kilometers per hour instantly. The formula is km/h = mph × 1.609344, and the reference table below covers the values people look up most.
1 mph equals
1.609 km/h
Formula
Miles per hour to Kilometers per hour table
| Miles per hour | Kilometers per hour |
|---|---|
| 10 mph | 16.093 km/h |
| 20 mph | 32.187 km/h |
| 30 mph | 48.280 km/h |
| 40 mph | 64.374 km/h |
| 50 mph | 80.467 km/h |
| 60 mph | 96.561 km/h |
| 70 mph | 112.654 km/h |
| 80 mph | 128.748 km/h |
| 90 mph | 144.841 km/h |
| 100 mph | 160.934 km/h |
Frequently asked questions
How many kilometers per hour are in a miles per hour?
One miles per hour equals 1.609 kilometers per hour. The conversion is a single multiplication, so 10 mph is 16.093 km/h.
What is the formula to convert miles per hour to kilometers per hour?
km/h = mph × 1.609344. Enter any value above and the result updates as you type, with no rounding until the final display.
How do I convert kilometers per hour back to miles per hour?
Use the reverse conversion: divide instead of multiplying, or open the kilometers per hour to miles per hour page for the same tool the other way round.
Is this miles per hour to kilometers per hour conversion exact?
The underlying factor is the internationally defined one, so the only rounding happens when the result is displayed. The table below shows values rounded to 3 decimal places.