Speed
Mile/hour vs Kilometer/hour vs Foot/second
Quick reference table for unit conversions with key differences.
Reference Table
| Mile/hourmph | Kilometer/hourkm/h | Foot/secondft/s |
|---|---|---|
| 1 | 1.609344 | 1.466667 |
| 5 | 8.04672 | 7.333333 |
| 10 | 16.09344 | 14.66667 |
| 25 | 40.2336 | 36.66667 |
| 50 | 80.4672 | 73.33333 |
| 100 | 160.9344 | 146.6667 |
| 200 | 321.8688 | 293.3333 |
| 500 | 804.672 | 733.3333 |
| 1000 | 1609.344 | 1466.667 |
About These Units
mph
Mile/hour
Symbol: mph
Miles per hour is used for road speed limits and vehicle speeds in the US and UK.
Used in: United States, United Kingdom
km/h
Kilometer/hour
Symbol: km/h
Kilometers per hour is the standard speed unit for road traffic in most countries worldwide.
Used in: Worldwide (except US, UK)
ft/s
Foot/second
Symbol: ft/s
Feet per second is used in engineering, ballistics, and some American sports contexts.
Used in: United States
Key Differences
- 1 mph is equal to 1.609344 km/h.
- 1 mph is equal to 1.466667 ft/s.
- 1 km/h is equal to 0.9113444 ft/s.