Speed Converter
km/h, mph, knots and m/s.
1 mile per hour = 0.44704 m/s. Enter any value to convert miles per hour (mph) to meters per second (m/s), or use the table below for common values.
m/s = mph × 0.44704
Example: 10 mph = 4.4704 m/s. To convert the other way, use mph = m/s × 2.236936292.
Quick mental estimate: multiply by about 0.45.
| Miles per Hour (mph) | Meters per Second (m/s) |
|---|---|
| 1 mph | 0.44704 m/s |
| 5 mph | 2.2352 m/s |
| 10 mph | 4.4704 m/s |
| 20 mph | 8.9408 m/s |
| 30 mph | 13.4112 m/s |
| 40 mph | 17.8816 m/s |
| 50 mph | 22.352 m/s |
| 60 mph | 26.8224 m/s |
| 70 mph | 31.2928 m/s |
| 80 mph | 35.7632 m/s |
| 90 mph | 40.2336 m/s |
| 100 mph | 44.704 m/s |
| 120 mph | 53.6448 m/s |
| 150 mph | 67.056 m/s |
| 200 mph | 89.408 m/s |
| 300 mph | 134.112 m/s |
Miles per hour is the road speed unit in the United States and the United Kingdom.
The meter per second is the SI unit of speed, used in physics, engineering and for wind speed in weather science.
Use the formula m/s = mph × 0.44704. For example, 10 mph = 4.4704 m/s.
1 mph = 0.44704 m/s.
Use mph = m/s × 2.236936292. 1 m/s = 2.236936292 mph.