Mile/Hour to Meter/Second (mph to m/s)
Result
0.44704 Meter/Second
Formula
m/s = mph × 0.44704
1 mph = 0.44704 m/s, and 1 m/s = 2.236936292 mph.
Speed units are a length divided by a time: 1 km/h = 1/3.6 m/s, 1 mph = 0.44704 m/s exactly, and 1 knot = 1 nautical mile per hour = 1,852/3,600 m/s.
Worked examples
- 1 mph × 0.44704 = 0.44704 m/s
- 10 mph × 0.44704 = 4.4704 m/s
- 100 mph × 0.44704 = 44.704 m/s
Common mistakes
- A knot is a nautical mile per hour, so 1 kn = 1.852 km/h and 1.15078 mph — not 1 mph.
- Weather services quote wind in km/h, m/s, mph or knots depending on country; check the unit before comparing forecasts.
Mile/Hour to Meter/Second table
| Mile/Hour (mph) | Meter/Second (m/s) |
|---|---|
| 1 | 0.44704 |
| 2 | 0.89408 |
| 5 | 2.2352 |
| 10 | 4.4704 |
| 20 | 8.9408 |
| 50 | 22.352 |
| 100 | 44.704 |
| 1,000 | 447.04 |
The units
- Mile/Hour (mph)
- Miles per hour: exactly 0.44704 m/s.
- Meter/Second (m/s)
- A unit of speed.
Sources for these factors
- Guide for the Use of the International System of Units (SP 811), Appendix B: conversion factors — NIST
- Handbook 44 (2024), Appendix C: General Tables of Units of Measurement — NIST
Last reviewed against these sources. An automated check recomputes every factor from its definition on each build. How we check accuracy