Miles per hour to meters per second
Type a value in miles per hour to see it in meters per second straight away, or type in the second box to convert back.
Loading the tool…
Processing and privacy: The result is calculated inside your browser and your data is not sent to any server.
How to use it
- Type the value in the miles per hour box.
- Read the result in meters per second as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
m/s = mph × 0.44704
Multiply the value in miles per hour by 0.44704 to get meters per second.
Example
To convert 25 mph to meters per second: 25 × 0.44704 = 11.176 m/s.
Conversion table
| Miles per hour (mph) | Meters per second (m/s) |
|---|---|
| 1 | 0.44704 |
| 2 | 0.89408 |
| 3 | 1.34112 |
| 5 | 2.2352 |
| 10 | 4.4704 |
| 20 | 8.9408 |
| 25 | 11.176 |
| 50 | 22.352 |
| 100 | 44.704 |
| 250 | 111.76 |
| 500 | 223.52 |
| 1,000 | 447.04 |
About the units
- Mile per hour
- Covering one international mile (1609.344 m) in one hour, exactly 0.44704 m/s. It is used on roads in the United States and the United Kingdom.
- Meter per second
- The SI unit of speed: covering a distance of one meter in one second.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many meters per second are in one mile per hour?
1 mph = 0.44704 m/s exactly.
How do I convert miles per hour to meters per second?
Use m/s = mph × 0.44704. For example, 25 mph = 11.176 m/s.
How many miles per hour are in one meter per second?
1 m/s = 2.23694 mph.
How do I convert km/h to m/s in my head?
Divide by 3.6, because an hour is 3600 seconds and a kilometer is 1000 meters. For example 72 km/h is 20 m/s; multiply by 3.6 to go back.
Why do Mach values differ between sources?
The speed of sound depends on air temperature. We use 340.294 m/s at sea level and 15 °C; at 11 km altitude it is about 295 m/s, so Mach 1 is slower there.