KM/H to MPH Converter
Useful for speed limits abroad, car speedometers and cycling or running speeds.
1 km/h = 0.6214 mph
miles per hour
1 km/h = 0.6214 mph
How to convert kilometers per hour to miles per hour
Divide the number of kilometers per hour by 1.609344.
Formula
mph = km/h ÷ 1.609344
For a quick estimate, multiply by about 0.621371.
Examples
- 50 km/h ÷ 1.609344 = 31.0686 mph
- 100 km/h ÷ 1.609344 = 62.1371 mph
- 130 km/h ÷ 1.609344 = 80.7783 mph
Kilometers per hour to miles per hour conversion table
| Kilometers per hour (km/h) | Miles per hour (mph) |
|---|---|
| 5 | 3.1069 |
| 10 | 6.2137 |
| 20 | 12.4274 |
| 30 | 18.6411 |
| 40 | 24.8548 |
| 50 | 31.0686 |
| 60 | 37.2823 |
| 70 | 43.496 |
| 80 | 49.7097 |
| 90 | 55.9234 |
| 100 | 62.1371 |
| 110 | 68.3508 |
| 120 | 74.5645 |
| 130 | 80.7783 |
| 150 | 93.2057 |
| 200 | 124.2742 |
Values rounded to 4 decimal places or 4 significant digits.
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.
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.
Frequently asked questions
How many miles per hour are in one kilometer per hour?
One kilometer per hour equals 0.6214 miles per hour (rounded).
How do I convert kilometers per hour to miles per hour?
Divide the number of kilometers per hour by 1.609344. For example: 100 km/h ÷ 1.609344 = 62.1371 mph.
How many kilometers per hour are in one mile per hour?
One mile per hour equals 1.6093 kilometers per hour.
Is the km/h to mph 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.