Mph to m/s
One mph equals 0.44704 m/s. Type any number and the answer appears as you type — the maths happens in your browser.
Result
The same value in every unit
| Unit | Value |
|---|
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Common values
| mph | m/s |
|---|---|
| 1 mph | 0.44704 m/s |
| 2 mph | 0.89408 m/s |
| 3 mph | 1.34112 m/s |
| 5 mph | 2.2352 m/s |
| 10 mph | 4.4704 m/s |
| 15 mph | 6.7056 m/s |
| 20 mph | 8.9408 m/s |
| 25 mph | 11.176 m/s |
| 50 mph | 22.352 m/s |
| 100 mph | 44.704 m/s |
| 500 mph | 223.52 m/s |
| 1000 mph | 447.04 m/s |
How to use
- Enter the number of mph in the field.
- The result in m/s updates on every keystroke.
- Use the table below for the values people look up most often.
Formula and reverse conversion
The formula
To convert by hand: m/s = mph ÷ 2.236936292. Going back the other way, one m/s is 2.236936292 mph.
Where the odd number comes from
The factor is not a round number because the imperial units are defined through the metric ones by international agreement: an inch is exactly 25.4 mm and a pound is exactly 0.45359237 kg. Everything else follows from those definitions.
m/s = mph ÷ 2.236936292
Frequently asked questions
How many m/s are in one mph?
One mph is 0.44704 m/s.
How do I convert mph to m/s?
Multiply by the factor: m/s = mph ÷ 2.236936292.
Is the result exact?
The factors are the exact legal definitions, and up to ten significant digits are kept in the answer. Rounding happens only in the display.
How do I convert m/s back to mph?
One m/s is 2.236936292 mph — or open the reverse page linked below.