Speed
Kilometer per Hour to Mile per Hour Converter
Convert Kilometer per Hour to Mile per Hour with the exact formula, a worked example and a quick conversion table.
Smart input
β
Quick values:
Conversion formula
The exact formula applied:
β
Conversion formula
mph = km/h Γ· 1.609344
km/h = mph Γ 1.609344
Worked example
50 km/h = 31.06856 mph
mph = km/h Γ· 1.609344
Speed is distance per time; 1 knot = 1.852 km/h and Mach β 340.29 m/s at sea level.
Quick conversion table
| Kilometer per Hour (km/h) | Mile per Hour (mph) |
|---|---|
| 1 | 0.6213712 |
| 2 | 1.24274 |
| 5 | 3.10686 |
| 10 | 6.21371 |
| 25 | 15.53428 |
| 50 | 31.06856 |
| 100 | 62.13712 |
| 250 | 155.3428 |
| 500 | 310.6856 |
| 1,000 | 621.37119 |
Reverse conversion table
| Mile per Hour (mph) | Kilometer per Hour (km/h) |
|---|---|
| 1 | 1.60934 |
| 2 | 3.21869 |
| 5 | 8.04672 |
| 10 | 16.09344 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.9344 |
| 250 | 402.336 |
| 500 | 804.672 |
| 1,000 | 1,609.34 |
About the two units
km/hKilometer per Hour
The common road-vehicle speed unit.
1 km/h = 0.277777777778 m/s
Non-SI Unit Speed
mphMile per Hour
The imperial/US speed unit.
1 mph = 0.44704 m/s
Non-SI Unit Speed
Convert to every unit in this category
Instant values for all units based on your input
Related conversions
Common engineering conversions
Megapascal β Pound per Square InchMegapascal β BarKilogram-force per square centimetre β MegapascalPound per Square Inch β BarMPa = N/mmΒ² (identical)Kilonewton β NewtonKilonewton β Kilogram-forceCubic Meter β Cubic FootSquare Meter β Square FootKilogram per Cubic Meter β Pound per Cubic FootMillimeter β InchCentimeter β InchMeter β FootNewton-metre β Pound-force-footCubic Meter per Second β Cubic Meter per Hour