Mile per Hour to Kilometre per Hour
Free instant mile per hour to kilometre per hour converter. 1 mph = 1.60934 km/h.
Common Mile per Hour to Kilometre per Hour values
| Mile per Hour (mph) | Kilometre per Hour (km/h) |
|---|---|
| 1 | 1.60934 |
| 5 | 8.04672 |
| 10 | 16.0934 |
| 25 | 40.2336 |
| 50 | 80.4672 |
| 100 | 160.934 |
| 500 | 804.672 |
| 1000 | 1609.34 |
How does Mile per Hour to Kilometre per Hour conversion work?
Type a value in the Mile per Hour (mph) field and the equivalent in Kilometre per Hour (km/h) appears instantly to the right. The math uses the exact formula shown above — no rounding errors, no approximations beyond standard floating-point precision. Use the swap button to flip the units and see the inverse conversion.
Mile per Hour. The standard road-speed unit in the US and UK. 60 mph is roughly highway speed.
Kilometre per Hour. The standard road-speed unit in most metric countries. 100 km/h is the typical highway speed.
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🎯 Accurate conversions
Conversion factors come from the official standard (NIST, BIPM, ISO definitions where applicable). Values are precise to standard floating-point limits.
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