Kilometer per Hour to Mile per Hour (km/h to mph)
Convert km/h to mph — Speed converter
1 km/h = 0.621371 mph.
Kilometers per hour (km/h) is the metric speed unit; miles per hour (mph) is used on US and UK roads. To convert km/h to mph, multiply by 0.621371 — roughly five-eighths of the km/h value.
It's the everyday conversion for turning a metric speedometer or speed limit into mph. A 100 km/h motorway limit is about 62.14 mph, and 50 km/h in town is about 31.07 mph.
0.62137169Click to copy
1 km/h = 0.62137169 mph
Kilometer per Hour to Mile per Hour formula
1 Kilometer per Hour = 0.62137169 mph
Worked examples
- 25 km/h = 15.534292 mph
- 100 km/h = 62.137169 mph
Common uses
- Turning metric speed limits into mph
- Reading a km/h speedometer in mph
- Comparing running or cycling speeds
Kilometer per Hour to Mile per Hour conversion table
| Kilometer per Hour (km/h) | Mile per Hour (mph) |
|---|---|
| 1 | 0.62137169 |
| 2 | 1.242743 |
| 3 | 1.864115 |
| 5 | 3.106858 |
| 8 | 4.970974 |
| 10 | 6.213717 |
| 12 | 7.45646 |
| 15 | 9.320575 |
| 20 | 12.427434 |
| 25 | 15.534292 |
| 50 | 31.068584 |
| 100 | 62.137169 |
| 250 | 155.342922 |
| 500 | 310.685845 |
| 1000 | 621.371689 |
Frequently asked questions
How many mph are in one km/h?
One kilometer per hour equals 0.621371 miles per hour.
What is 100 km/h in mph?
100 km/h = 62.14 mph.
What is 30 km/h in mph?
30 km/h = 18.64 mph.
How do I convert km/h to mph quickly?
Multiply by 0.62, or take roughly five-eighths of the km/h value.