How to convert: km/h → mph
Convert km/h directly to mph. This page uses a fixed relationship between the two units and performs the calculation instantly in your browser.
km/h and mph measure the same quantity: speed. Converting between them makes it easier to compare a measurement or use it in another unit system.
Worked examples
km/h and mph measure the same quantity: speed. Converting between them makes it easier to compare a measurement or use it in another unit system.
km/h and mph measure the same quantity: speed. Converting between them makes it easier to compare a measurement or use it in another unit system.
km/h and mph measure the same quantity: speed. Converting between them makes it easier to compare a measurement or use it in another unit system.
Conversion table
| km/h | mph |
|---|---|
| 1 km/h | 0.621371 mph |
| 5 km/h | 3.10686 mph |
| 10 km/h | 6.21371 mph |
| 20 km/h | 12.4274 mph |
| 50 km/h | 31.0686 mph |
| 100 km/h | 62.1371 mph |
Why this conversion is useful
Speed links distance to time. Conversions become useful when moving between road, scientific, maritime and aviation contexts. Kilometres per hour are common on roads, metres per second in physics, miles per hour in several English-speaking countries, and knots in navigation.