MPH to KM/H Converter
Handy for US and UK speed limits, car specs and treadmill speeds.
1 mph = 1.6093 km/h
kilometers per hour
1 mph = 1.6093 km/h
How to convert miles per hour to kilometers per hour
Multiply the number of miles per hour by 1.609344.
Formula
km/h = mph × 1.609344
Examples
- 30 mph × 1.609344 = 48.2803 km/h
- 60 mph × 1.609344 = 96.5606 km/h
- 70 mph × 1.609344 = 112.6541 km/h
Miles per hour to kilometers per hour conversion table
| Miles per hour (mph) | Kilometers per hour (km/h) |
|---|---|
| 5 | 8.0467 |
| 10 | 16.0934 |
| 15 | 24.1402 |
| 20 | 32.1869 |
| 25 | 40.2336 |
| 30 | 48.2803 |
| 35 | 56.327 |
| 40 | 64.3738 |
| 45 | 72.4205 |
| 50 | 80.4672 |
| 55 | 88.5139 |
| 60 | 96.5606 |
| 65 | 104.6074 |
| 70 | 112.6541 |
| 75 | 120.7008 |
| 80 | 128.7475 |
Values rounded to 4 decimal places or 4 significant digits.
About miles per hour
Miles per hour is the road speed unit in the US and the UK. One mile per hour is exactly 1.609344 km/h.
About kilometers per hour
Kilometers per hour is the unit on speed-limit signs and speedometers in most of the world. 1 km/h equals 1/3.6 m/s, or about 0.278 m/s.
Frequently asked questions
How many kilometers per hour are in one mile per hour?
One mile per hour equals 1.6093 kilometers per hour (rounded).
How do I convert miles per hour to kilometers per hour?
Multiply the number of miles per hour by 1.609344. For example: 60 mph × 1.609344 = 96.5606 km/h.
How many miles per hour are in one kilometer per hour?
One kilometer per hour equals 0.6214 miles per hour.
Is the mph to km/h conversion exact?
Yes. The factor follows directly from the official definitions of both units, so the only rounding is in how many decimals are displayed.