Miles per hour to Kilometers per hour Conversion

How to convert miles per hour to kilometers per hour

1 mile per hour is equal to 1.609344 kilometers per hour:

1 mi/h = 1.609344 km/h

When a speed V in miles per hour is multiplied by 1.609344, it gives speed in kilometers per hour.

V_km/h = V_mi/h × 1.609344

Example

To convert 30 miles per hour into kilometers per hour, it is multiplied by 1.609344:

(30 mi/h) × 1.609344 = 48.28032 km/h

Miles per hour

Miles per hour is a British imperial and United States customary unit of speed. It is equal to the the number of miles traveled in one hour. The unit symbols are mph or mi/h.

Kilometers per hour

The kilometers per hour is a unit of speed (scalar quantity) and velocity (vector quantity). It is equal to the distance traveled a body in kilometers in one hour. The SI symbols is km/h, and abbreviations are kph, kmph, km/hr.

Quick Conversion Table

The quick mile per hour to kilometer per hour conversion table is given below: