Meters per Second to Miles per Hour Converter

About the m/s to mph calculation

One meter per second is exactly 2.2369 miles per hour, so converting between them is a single multiplication. Enter any value above and the result updates as you type. The SI unit of speed, used in physics and in wind-speed reporting. Speed limits and vehicle speedometers in the US and UK. Exactly 1.609344 km/h.

Formula

mph = m/s × 2.2369

1 m/s = 2.2369 mph
1 mph = 0.44704 m/s

Worked example

To convert 10 m/s, multiply by 2.2369: 10 × 2.2369 = 22.3694 mph.

Frequently asked questions

How many miles per hour are in a meter per second?

There are 2.2369 miles per hour in one meter per second. To convert any amount, multiply the number of meters per second by 2.2369.

How do I convert miles per hour back to meters per second?

Divide instead of multiplying, or equivalently multiply by 0.44704. One mile per hour is 0.44704 meters per second.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between meters per second and miles per hour is defined exactly rather than measured, so the only rounding here is in how many decimal places we show.

Where is each of these units used?

Meters per Second: the SI unit of speed, used in physics and in wind-speed reporting. Miles per Hour: speed limits and vehicle speedometers in the US and UK. Exactly 1.609344 km/h.

Sources

• NIST Special Publication 811 — Guide for the Use of the International System of Units