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MPH to Meters per Second Converter

Convert miles per hour to meters per second instantly, with a reference table for physics problems and sports speeds.

MPH to M/S Converter

1 mph = 0.447 m/s

Multiply miles per hour by 0.44704 to get meters per second.

The link carries the values you entered, so whoever opens it sees the same result. Nothing is stored on our side — the numbers travel in the link itself.

Miles per hour to meters per second reference table

The conversions people look up most often, rounded to 4 decimal places.

Common miles per hour to meters per second conversions
Mile per hour (mph)Meter per second (m/s)
1 mph0.447 m/s
5 mph2.2352 m/s
10 mph4.4704 m/s
20 mph8.9408 m/s
27 mph12.0701 m/s
30 mph13.4112 m/s
45 mph20.1168 m/s
60 mph26.8224 m/s
70 mph31.2928 m/s
80 mph35.7632 m/s
100 mph44.704 m/s
150 mph67.056 m/s
200 mph89.408 m/s

How the mph to m/s converter calculation works

A mile per hour is exactly 0.44704 meters per second:

m/s = mph × 0.44704

The factor is 1,609.344 metres divided by 3,600 seconds — both numbers exact, so the result is too.

Metres per second is the SI unit of speed, which is why it is the one physics uses. Every kinematic equation, every force calculation, every energy figure expects m/s: put mph into ½mv² and the answer is wrong by a factor of five.

Worth knowing: the reverse conversion is nearly a factor of 2.237, and m/s to km/h is exactly 3.6.

Sports and everyday speeds:

  • A brisk walk, 3 mph → 1.34 m/s
  • A 6-minute mile, 10 mph → 4.47 m/s
  • Usain Bolt's 100 m record pace, 27 mph → 10.44 m/s average, with a peak near 12.3 m/s
  • A 30 mph urban limit → 13.41 m/s
  • A 70 mph motorway limit → 31.29 m/s

Why the physics matters. Kinetic energy goes with the square of speed, so a car at 70 mph (31.3 m/s) carries 2.7 times the energy of the same car at 43 mph (19.2 m/s), not 1.6 times. That squared relationship is the single most important fact in road-safety arithmetic, and it is far easier to see in m/s than in mph.

Wind loading works the same way: doubling wind speed quadruples the force on a structure. Engineering wind speeds are given in m/s for exactly that reason.

For a rough figure, divide mph by 2.24.

Frequently asked questions

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

Multiply the number of miles per hour by 0.44704 to get meters per second.

How many meters per second are in 27 mph?

27 mph equals 12.0701 m/s. The reference table on this page lists the other values people look up most often.

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

Divide the number of meters per second by 0.44704, or use the swap control on the converter above.

Is this conversion exact?

Yes. The factor is fixed by international definition rather than measured, so the conversion is exact - only the displayed rounding limits precision.

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