m/s to mph converter
m/s to mph takes one step: divide by 0.44704, because one mile per hour is exactly 0.44704 meters per second. Enter a speed and the miles per hour appear as you type, with km/h and knots below; mph to m/s works in the same box.
Example: Speed 10 · Direction: Meters per second to miles per hour → Answer: 10 m/s = 22.3694 mph. Source: NIST Special Publication 811, Appendix B.8: mile per hour = 4.4704 E−01 m/s (exact), kilometer per hour = 2.777 778 E−01 m/s, knot = 5.144 444 E−01 m/s (read 15.10.2026). Updated: .
How it is calculated
How to convert m/s to mph
mph = m/s ÷ 0.44704, which is the same as multiplying by 2.2369. The other way, m/s = mph × 0.44704. The factor is exact: a mile is 1,609.344 meters and an hour 3,600 seconds, and 1,609.344 ÷ 3,600 = 0.44704. So 10 meters per second is 22.3694 miles per hour, and 60 mph is 26.8224 m/s.
Meters per second to miles per hour chart
| Meters per second | Miles per hour |
|---|---|
| 1 | 2.2369 |
| 5 | 11.1847 |
| 10 | 22.3694 |
| 20 | 44.7387 |
| 30 | 67.1081 |
Quick estimate in your head
Double the meters per second and add a tenth of the result: 10 → 20 + 2 = 22, close to the exact 22.37. For the reverse, halve the miles per hour and take away a tenth: 60 → 30 − 3 = 27, against an exact 26.82. Many weather services outside the US give wind in m/s, while US forecasts use miles per hour, so this is the conversion you need when comparing them; the Beaufort scale lists both.
Common mistakes
Multiplying by 3.6 gives kilometers per hour, not miles per hour: 10 m/s is 36 km/h but only 22.37 mph. And 1 knot (0.5144 m/s) is not the same as 1 mph (0.44704 m/s). The converter shows km/h and knots next to the answer; for those pairs on their own use m/s to km/h or knots to mph, and for road speeds km/h to mph.
Frequently asked questions
How many mph is 1 m/s?
1 m/s = 2.2369 miles per hour.
How do I convert meters per second to miles per hour?
Divide by 0.44704 or multiply by 2.2369: 20 m/s × 2.2369 = 44.7387 mph.
How do I convert mph to m/s?
Multiply by 0.44704: 60 mph × 0.44704 = 26.8224 m/s.
What is 100 mph in meters per second?
100 mph = 44.704 m/s.
Why is the factor exactly 0.44704?
Because the international mile is defined as 1,609.344 meters. Divided by the 3,600 seconds of an hour that gives 0.44704 meters per second.
Sources and legal basis
As of: · Editorial policy
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