Convert kph to mph
Enter the value to convert from kilometer per hour to mile per hour.
How to Convert Kilometer per hour to Mile per hour
Converting kilometer per hour to mile per hour is straightforward using our conversion calculator.
Conversion Formula
mph = km/h ÷ 1.609344Reverse conversion: Convert mph to kph
Comparison: Kilometer-per-hour vs Mile-per-hour
When to Use Each Unit
Kilometer-per-hour: Primary speed unit for road transportation, weather reporting, and general speed measurements in metric countries.
Mile-per-hour: Primary speed unit in United States for transportation, weather, and general speed measurements.
Common Conversion Values
- 1 km/h ≈ 0.278 m/s
- 1 km/h ≈ 0.621 mph
- 1.609 km/h = 1 mph
- 1 km/h ≈ 0.540 knots
About Kilometer
Definition: The kilometer per hour (symbol: km/h) expresses speed as the number of kilometers traveled in one hour.
History: Developed with automotive transportation and became standard speed unit in most countries using metric system.
Current Use: Primary speed unit for road transportation, weather reporting, and general speed measurements in metric countries.
Examples: City driving: 50 km/h, highway: 100-130 km/h, cycling: 15-40 km/h, wind speed: 10-50 km/h
About Mile
Definition: The mile per hour (symbol: mph) expresses speed as the number of miles traveled in one hour.
History: Developed with imperial measurement system and automotive era. Standard in United States and some Commonwealth countries.
Current Use: Primary speed unit in United States for transportation, weather, and general speed measurements.
Examples: City speed: 25-35 mph, highway: 55-80 mph, running: 6-15 mph, hurricane winds: 74+ mph