Miles per Hour to Meters per Second Converter

About the mph to m/s calculation

One mile per hour is exactly 0.44704 meters per second, so converting between them is a single multiplication. Enter any value above and the result updates as you type. Speed limits and vehicle speedometers in the US and UK. Exactly 1.609344 km/h. The SI unit of speed, used in physics and in wind-speed reporting.

Formula

m/s = mph × 0.44704

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

Worked example

To convert 60 mph, multiply by 0.44704: 60 × 0.44704 = 26.8224 m/s.

Frequently asked questions

How many meters per second are in a mile per hour?

There are 0.44704 meters per second in one mile per hour. To convert any amount, multiply the number of miles per hour by 0.44704.

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

Divide instead of multiplying, or equivalently multiply by 2.2369. One meter per second is 2.2369 miles per hour.

Is this conversion exact?

Yes. Since the international agreement of 1959, the relationship between miles per hour and meters per second 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?

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

Sources

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