mph to km/h
Convert km/h, mph, m/s, knots and Mach, the everyday and technical measures of how fast something moves.
Converter
Mile per hour to Kilometer per hour at a glance
21 rows| Mile per hour | Kilometer per hour |
|---|---|
| 1 mph | 1.609344 km/h |
| 2 mph | 3.218688 km/h |
| 3 mph | 4.828032 km/h |
| 4 mph | 6.437376 km/h |
| 5 mph | 8.04672 km/h |
| 6 mph | 9.656064 km/h |
| 7 mph | 11.265408 km/h |
| 8 mph | 12.874752 km/h |
| 9 mph | 14.484096 km/h |
| 10 mph | 16.09344 km/h |
| 15 mph | 24.14016 km/h |
| 20 mph | 32.18688 km/h |
| 25 mph | 40.2336 km/h |
| 30 mph | 48.28032 km/h |
| 40 mph | 64.37376 km/h |
| 50 mph | 80.4672 km/h |
| 75 mph | 120.7008 km/h |
| 100 mph | 160.9344 km/h |
| 250 mph | 402.336 km/h |
| 500 mph | 804.672 km/h |
| 1,000 mph | 1,609.344 km/h |
Quick pairs
tap to loadHow the mile per hour to kilometer per hour conversion works
Multiply by 1.609344 to go from mile per hour to kilometer per hour:
km/h = mph × 1.609344
Going the other way, multiply by 0.6213711922, which is the same as dividing by 1.609344.
Questions
How many kilometer per hour are in one mile per hour?
One mile per hour equals 1.609344 kilometer per hour.
Which units does this speed converter cover?
17 units in total, all referenced to the meter per second. They include meter per second, kilometer per hour, mile per hour, foot per second, knot, centimeter per second and more. Pick any pair from the two dropdown lists.
How precise are the results?
Every conversion is computed in your browser at double precision from the factors listed on this page, which follow the SI definitions and the exact international agreements for imperial and US customary units. Use the Decimals control to round the display without changing the underlying value.
Does anything I type leave my device?
No. The converter is plain JavaScript running locally, with no server round-trip, and the page keeps working offline once loaded.