Convert Meters per Second to Miles per Hour
Meters per second to miles per hour is the conversion you need when a speed comes from a science or metric source but you want to think in the units used on US road signs and speedometers. One meter per second is about 2.236936 miles per hour, so the number gets quite a bit bigger when you switch from m/s to mph.
Meters per second to Miles per hour conversion table
| Meters per second (m/s) | Miles per hour (mph) |
|---|---|
| 1 | 2.236936 |
| 2 | 4.473873 |
| 3 | 6.710809 |
| 5 | 11.184681 |
| 10 | 22.369363 |
| 20 | 44.738726 |
| 50 | 111.846815 |
| 100 | 223.693629 |
| 500 | 1,118.468146 |
| 1,000 | 2,236.936292 |
The formula
To convert meters per second to miles per hour, multiply the speed in meters per second by 2.236936:
miles per hour = meters per second × 2.236936
A worked example
Say a sprinter is running at 10 meters per second, a common benchmark speed in track and field:
10 × 2.236936 = 22.37 mph
That's roughly how fast an elite sprinter covers ground during the middle of a 100-meter race.
Why it's an approximation
Meters per second and miles per hour come from two different measurement systems, and a mile does not divide evenly into meters. Working out the exact relationship produces a long decimal that never terminates in a clean, short number, so the factor 2.236936 is rounded for practical use. That's fine for everyday purposes, but it means the displayed result is always an approximation rather than a perfectly exact figure.
When you'll use it
Converting scientific or metric speed data (wind speed, running speed, lab measurements) into the miles-per-hour units shown on US car speedometers and weather reports, and comparing international athletic times to US-style speed figures.
Frequently asked questions
How many miles per hour are in a meter per second?
About 2.236936 miles per hour. The value is a rounded approximation, not an exact figure, because it comes from converting between the metric and imperial systems.
Is the meters-per-second to miles-per-hour conversion exact?
No. The factor 2.236936 is a rounded decimal — the true relationship between meters and miles produces a long, non-terminating number, so any displayed result is rounded to a convenient number of digits.
What's a quick way to estimate m/s to mph in my head?
Multiply by roughly 2.2. A 10 m/s sprinter is running about 22 mph; a 5 m/s bike ride is about 11 mph. For anything that matters, use the exact factor above.