Mile per Hour (mph)
Miles per hour is the road speed unit in the United States and the United Kingdom. 60 mph is exactly 96.56064 km/h.
Symbol: mph
Quantity: speed (distance per time)
SI relation: 1 mph = 0.44704 m/s (exact)
Derivation: 1 mph = 1609.344 m ÷ 3600 s = 0.44704 m/s exactly.
Exact: yes, by definition
Typical uses
- US and UK speed limits
- Baseball pitch and tennis serve speeds
- Wind speed in US weather reports
Convert miles per hour to other units
| Conversion | 1 mph equals | Reverse |
|---|---|---|
| mile per hour to meter per second | 0.44704 m/s | meter per second to mile per hour |
| mile per hour to kilometer per hour | 1.609344 km/h | kilometer per hour to mile per hour |
| mile per hour to foot per second | 1.466666667 ft/s | foot per second to mile per hour |
| mile per hour to knot | 0.8689762419 kn | knot to mile per hour |
Open the Speed Converter to convert any value between all units.
Sources
- Guide for the Use of the International System of Units (SI), NIST Special Publication 811, 2008 Edition, National Institute of Standards and Technology , Appendix B.8, "mile per hour".
Last reviewed: . Factors are stored exactly and computed with 50-digit decimal arithmetic. See how we verify conversion factors.
Cite this page
APA
Scientific Converters. (2026, October 15). Mile per Hour (mph). Retrieved October 25, 2026, from https://scientificconverters.com/units/mile-per-hour/
IEEE
Scientific Converters, "Mile per Hour (mph)," scientificconverters.com. Accessed: Oct. 25, 2026. [Online]. Available: https://scientificconverters.com/units/mile-per-hour/