How to convert kilometres per hour to miles per hour
mph = km/h × 0.6213711922
Example: 5 km/h × 0.6213711922 = 3.106855961 mph
Kilometers per Hour to Miles per Hour table
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 0.5 km/h | 0.3106856 mph |
| 1 km/h | 0.62137119 mph |
| 2 km/h | 1.2427424 mph |
| 3 km/h | 1.8641136 mph |
| 4 km/h | 2.4854848 mph |
| 5 km/h | 3.106856 mph |
| 6 km/h | 3.7282272 mph |
| 7 km/h | 4.3495983 mph |
| 8 km/h | 4.9709695 mph |
| 9 km/h | 5.5923407 mph |
| 10 km/h | 6.2137119 mph |
| 15 km/h | 9.3205679 mph |
| 20 km/h | 12.427424 mph |
| 25 km/h | 15.53428 mph |
| 30 km/h | 18.641136 mph |
| 40 km/h | 24.854848 mph |
| 50 km/h | 31.06856 mph |
| 75 km/h | 46.602839 mph |
| 100 km/h | 62.137119 mph |
| 250 km/h | 155.3428 mph |
| 500 km/h | 310.6856 mph |
| 1,000 km/h | 621.37119 mph |
About these units
Kilometers per Hour (km/h): Kilometres per hour (km/h) is the speed unit on road signs and speedometers in most of the world.
Miles per Hour (mph): Miles per hour (mph) is used for road speeds in the US and UK. 1 mph is exactly 1.609344 km/h.
Frequently asked questions
How many miles per hour are in 1 kilometre per hour?
1 kilometre per hour (km/h) equals 0.6213711922 miles per hour (mph).
How do I convert km/h to mph?
Multiply the value in kilometres per hour by 0.6213711922. For example, 5 km/h × 0.6213711922 = 3.106855961 mph.
How do I convert miles per hour back to kilometres per hour?
Multiply by 1.609344 (or divide by 0.6213711922). 1 mph = 1.609344 km/h.
What does km/h mean?
Kilometres per hour (km/h) is the speed unit on road signs and speedometers in most of the world.
Conversion factors come from exact international definitions (NIST SP 811, BIPM) where they exist. Results show up to 10 significant digits. Need every speed unit at once? Use the Speed Converter.