Miles per hour is a speed unit still common in the United States and other imperial-road contexts.
The unit developed from the established road use of miles and hours in Anglo-American transport practice.
Measurement system: Imperial and US customary systems. SI equivalent: 1 mph = 1.609344 km/h.
Mile per Hour facts
- Unit name
- Mile per Hour
- Symbol
- mph
- Category
- Speed
- Measurement system
- Imperial and US customary systems
- SI equivalent
- 1 mph = 1.609344 km/h
- Common uses
- Road speed, automotive work and transport reporting
Definition of the mile per hour
Miles per hour is a speed unit still common in the United States and other imperial-road contexts.
Measurement system and SI relationship
Imperial and US customary systems
SI equivalent: 1 mph = 1.609344 km/h
History of the mile per hour
The unit developed from the established road use of miles and hours in Anglo-American transport practice.
Where is the mile per hour used?
Road speed, automotive work and transport reporting