Miles per hour to Kilometers per hour Converter
Convert miles per hour to kilometers per hour instantly. 1 mph = 1.6093 km/h. Free two-way converter with the formula and a quick reference table.
How to convert miles per hour to kilometers per hour
kilometers per hour = miles per hour × 1.6093
One mile per hour equals 1.6093 kilometers per hour, so to convert miles per hour to kilometers per hour you multiply by 1.6093. Going the other way, one kilometer per hour is 0.621371 miles per hour. Both units measure speed, so the conversion is an exact ratio that never changes.
10 miles per hour = 16.0934 kilometers per hour. Multiply your mile per hour figure by the factor above (or just type it into the box) to convert any amount.
Need the other direction? kilometers per hour to miles per hour
miles per hour to kilometers per hour table
| miles per hour (mph) | kilometers per hour (km/h) |
|---|---|
| 1 | 1.6093 |
| 2 | 3.2187 |
| 3 | 4.828 |
| 5 | 8.0467 |
| 10 | 16.0934 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.93 |
| 250 | 402.34 |
| 500 | 804.67 |
| 1,000 | 1,609.34 |
Frequently asked questions
How many kilometers per hour are in a mile per hour?
One mile per hour equals 1.6093 kilometers per hour. So to convert, multiply the number of miles per hour by 1.6093.
How do I convert miles per hour to kilometers per hour?
Multiply by 1.6093, or simply enter the value in the converter above — it does the math instantly and works both ways.
Is this conversion exact?
Yes — both units measure the same quantity, so the ratio is fixed and this uses the standard internationally-agreed factor.