m/s to mph — convert metres per second to miles per hour
Exact 1 × 2.236936 = 2.236936
1 metre per second in other units
| Kilometres per hour | 3.6 | km/h |
|---|---|---|
| Miles per hour | 2.236936 | mph |
| Feet per second | 3.28084 | ft/s |
| Knots | 1.943844 | kn |
m/s to mph at a glance
| Metres per second | Miles per hour |
|---|---|
| 1 m/s | 2.236936 mph |
| 2 m/s | 4.473873 mph |
| 3 m/s | 6.710809 mph |
| 5 m/s | 11.184681 mph |
| 10 m/s | 22.369363 mph |
| 20 m/s | 44.738726 mph |
| 25 m/s | 55.923407 mph |
| 50 m/s | 111.846815 mph |
| 100 m/s | 223.693629 mph |
| 250 m/s | 559.234073 mph |
| 500 m/s | 1,118.47 mph |
| 1,000 m/s | 2,236.94 mph |
How to convert metres per second to miles per hour
Multiply by 2.236936 — one metre per second is 2.236936 miles per hour. That factor is exact: it comes from the definition of the units rather than from a measurement, so it will not change and does not need rounding.
Working 1 × 2.236936 = 2.236936
In words: about two miles per hour.
What these units are
The metre per second and the mile per hour are covered in the speed unit guide, along with every other unit on this page.
Questions
How many miles per hour are in a metre per second?
One metre per second is 2.236936 miles per hour. This figure is exact — it comes from the definition of the unit, not a measurement.
What is 1 metre per second in miles per hour?
1 metre per second is 2.236936 miles per hour. The working is 1 × 2.236936 = 2.236936.
What is a knot?
One nautical mile per hour — and a nautical mile is one minute of latitude, fixed at exactly 1,852 metres. That is the whole point of it: a ship making 10 knots for six hours has covered one degree of latitude, which you can read straight off a chart without converting anything.
Why do sailors and pilots say "knots" and not "knots per hour"?
Because the "per hour" is already inside the word. A knot is a speed, not a distance, so "knots per hour" would be an acceleration. The name comes from the knotted rope once paid out behind a ship and counted against a sand glass.
What's the quick way to convert mph to km/h in my head?
Multiply by 1.6, or add 60%. For the other direction, take away a third and then a little more. Fifty mph is 80 km/h, 60 is 97, 70 is 113 — worth remembering if you drive across a border where the signs change.
Why isn't Mach on this page?
Because it is not a fixed unit. Mach 1 is the local speed of sound, which falls as air gets colder — around 1,235 km/h at sea level but closer to 1,062 km/h in the stratosphere where airliners cruise. A single conversion factor would be wrong nearly everywhere.