Convert kilometers per hour to miles per hour with precision
100 kph = 62.14 mph
| KPH | MPH | KPH | MPH |
|---|---|---|---|
| 20 kph | 12.43 mph | 120 kph | 74.56 mph |
| 40 kph | 24.85 mph | 140 kph | 86.99 mph |
| 60 kph | 37.28 mph | 160 kph | 99.42 mph |
| 80 kph | 49.71 mph | 180 kph | 111.85 mph |
| 100 kph | 62.14 mph | 200 kph | 124.27 mph |
Converting kilometers per hour (kph) to miles per hour (mph) is crucial for understanding speed measurements across different countries and systems. This comprehensive guide provides everything you need for accurate kph to mph conversion.
Kilometers per hour (kph or km/h) is the standard speed unit in most countries using the metric system, while miles per hour (mph) is primarily used in the United States, United Kingdom, and a few other countries.
The conversion from kph to mph uses the following formula:
This conversion factor comes from the fact that 1 mile equals 1.609344 kilometers.
The conversion factor 0.621371 is the reciprocal of 1.609344:
KPH to MPH conversion is essential for travelers, automotive enthusiasts, international businesses, and anyone dealing with speed measurements across different measurement systems.
Both methods give the same result. Multiplying by 0.621371 is often easier for mental calculations, while dividing by 1.609344 is more intuitive for some.
KPH (metric system) is used by the vast majority of countries worldwide. Only the US, UK, and a few other countries primarily use MPH.
Dividing by 1.6 instead of 1.609344 introduces an error of about 0.6%, which is acceptable for quick estimates but not precise calculations.