Convert Miles per Hour to Meters per Second
Miles per hour to meters per second is the conversion scientists, engineers, and coaches reach for when a speed given in the imperial system needs to work in a metric physics formula. One mph is exactly 0.44704 m/s, so the number always gets smaller when you switch from mph to m/s.
Miles per hour to Meters per second conversion table
| Miles per hour (mph) | Meters per second (m/s) |
|---|---|
| 1 | 0.44704 |
| 2 | 0.89408 |
| 3 | 1.34112 |
| 5 | 2.2352 |
| 10 | 4.4704 |
| 20 | 8.9408 |
| 50 | 22.352 |
| 100 | 44.704 |
| 500 | 223.52 |
| 1,000 | 447.04 |
The formula
To convert miles per hour to meters per second, multiply the speed in mph by 0.44704:
meters per second = miles per hour × 0.44704
A worked example
Say a car is traveling at 60 mph and you want that speed in meters per second, the unit physics problems usually expect:
60 × 0.44704 = 26.82 m/s
That's the kind of number you'd plug straight into a stopping-distance or kinetic-energy calculation.
Why the number is exact
Miles per hour and meters per second measure the same thing — distance over time — using units from two different systems, but both units are defined precisely: one mile is exactly 1609.344 metres, and one hour is exactly 3600 seconds. Dividing those two exact numbers gives 0.44704 exactly, so the mph-to-m/s conversion carries no rounding error at all, which matters for physics, engineering, and sports-science calculations.
When you'll use it
Working physics and engineering problems, converting wind or ball speeds for sports science, and feeding speed data into scientific formulas or simulations that expect metric units.
Frequently asked questions
How many meters per second are in a mile per hour?
Exactly 0.44704 m/s. This is a precise, agreed-upon value, not a rounded approximation, because both the mile and the second are exactly defined.
Is the mph to m/s conversion exact?
Yes. The international mile is defined as exactly 1609.344 metres and an hour as exactly 3600 seconds, so 1 mph works out to exactly 0.44704 m/s — any rounding you see is only in how the result is displayed.
What's a quick way to estimate mph to m/s in my head?
Cut the mph value roughly in half, then a bit less. A 60 mph car is close to 27 m/s; a 90 mph pitch is close to 40 m/s. For anything that matters, use the exact factor above.