Speed Converter
km/h, mph, knots and m/s.
Conversion
Kilometers per Hour to Miles per Hour Converter
1 kilometer per hour = 0.6213711922 mph. Enter any value to convert kilometers per hour (km/h) to miles per hour (mph), or use the table below for common values.
Formula
mph = km/h × 0.6213711922
Example: 10 km/h = 6.213711922 mph. To convert the other way, use km/h = mph × 1.609344.
Quick mental estimate: multiply by about 0.62.
Kilometers per Hour to Miles per Hour conversion table
| Kilometers per Hour (km/h) | Miles per Hour (mph) |
|---|---|
| 1 km/h | 0.6213711922 mph |
| 5 km/h | 3.106855961 mph |
| 10 km/h | 6.213711922 mph |
| 20 km/h | 12.42742384 mph |
| 30 km/h | 18.64113577 mph |
| 40 km/h | 24.85484769 mph |
| 50 km/h | 31.06855961 mph |
| 60 km/h | 37.28227153 mph |
| 70 km/h | 43.49598346 mph |
| 80 km/h | 49.70969538 mph |
| 90 km/h | 55.9234073 mph |
| 100 km/h | 62.13711922 mph |
| 120 km/h | 74.56454307 mph |
| 150 km/h | 93.20567884 mph |
| 200 km/h | 124.2742384 mph |
| 300 km/h | 186.4113577 mph |
About kilometers per hour and miles per hour
Kilometers per hour is the speed unit on road signs and speedometers in most of the world.
Miles per hour is the road speed unit in the United States and the United Kingdom.
Other Speed conversions
Miles per Hour → Kilometers per HourReverse conversionKilometers per Hour → Meters per Secondkm/h → m/sKilometers per Hour → Feet per Secondkm/h → ft/sKilometers per Hour → Knotskm/h → knMeters per Second → Miles per Hourm/s → mphFeet per Second → Miles per Hourft/s → mphKnots → Miles per Hourkn → mph
Frequently asked questions
How do I convert kilometers per hour to miles per hour?
Use the formula mph = km/h × 0.6213711922. For example, 10 km/h = 6.213711922 mph.
What is 1 kilometer per hour in miles per hour?
1 km/h = 0.6213711922 mph.
How do I convert miles per hour back to kilometers per hour?
Use km/h = mph × 1.609344. 1 mph = 1.609344 km/h.