Speed
Kilometer/hour vs Mile/hour vs Meter/second
Quick reference table for unit conversions with key differences.
Reference Table
| Kilometer/hourkm/h | Mile/hourmph | Meter/secondm/s |
|---|---|---|
| 1 | 0.6213712 | 0.2777778 |
| 5 | 3.106856 | 1.388889 |
| 10 | 6.213712 | 2.777778 |
| 25 | 15.53428 | 6.944444 |
| 50 | 31.06856 | 13.88889 |
| 100 | 62.13712 | 27.77778 |
| 200 | 124.2742 | 55.55556 |
| 500 | 310.6856 | 138.8889 |
| 1000 | 621.3712 | 277.7778 |
About These Units
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)
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
m/s
Meter/second
Symbol: m/s
Meters per second is the SI unit of speed. Used in physics, meteorology, and scientific calculations.
Used in: Worldwide (science)
Key Differences
- 1 km/h is equal to 0.6213712 mph.
- 1 km/h is equal to 0.2777778 m/s.
- 1 mph is equal to 0.44704 m/s.