# Metre per second

Metre per second | |
---|---|

Unit system | SI |

Unit of | speed |

Symbol | m/s or mps |

Unit conversions | |

1 m/s in ... | ... is equal to ... |

km/h | 3.6 |

mph | 2.2369 |

knot | 1.9438 |

ft/s | 3.2808 |

**Metre per second** (American English: **meter per second**) is an SI derived unit of both speed (scalar) and velocity (vector quantity which specifies both magnitude and a specific direction), defined by distance in metres divided by time in seconds.

The SI unit symbols are m·s^{−1}, m s^{−1}, m/s, or m/s,^{[1]} sometimes (unofficially) abbreviated as *mps*. Where metres per second are several orders of magnitude too slow to be convenient, such as in astronomical measurements, velocities may be given in kilometres per second, where km/s is 1000 metres per second, sometimes unofficially abbreviated as "kps". 1

## Conversions

m/s is equivalent to: 1

- = 3.6 km/h (exactly)
^{[2]} - ≈ 3.2808 feet per second (approximately)
^{[3]} - ≈ 2.2369 miles per hour (approximately)
^{[4]} - ≈ 1.9438 knots (approximately)
^{[5]}

1 foot per second = m/s (exactly) 0.3048^{[6]}

1 mile per hour = 04 m/s (exactly) 0.447^{[7]}

1 km/h = 7 m/s (exactly) 0.2^{[8]}

1 kilometre per second is equivalent to:

- ≈ 0.6213 miles per second (approximately)
^{[9]} - ≈ 2237 miles per hour (approximately)
^{[10]}

## Relation to other measures

The benz, named in honour of Karl Benz, has been proposed as a name for one metre per second.^{[11]} Although it has seen some support as a practical unit,^{[12]} primarily from German sources,^{[11]} it was rejected as the SI unit of velocity^{[13]} and has not seen widespread use or acceptance.^{[14]}

## See also

## References

- ↑ SI brochure, Section 5.1
- ↑ CDX Automotive (2013).
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*Physique*. Paris, France: De Boeck Superieur. p. 1263. ISBN 2744500186. OCLC 41495989. - 1 2 Klein HA. (2011).
*The Science of Measurement: A Historical Survey*. Dover Publications. p. 695. ISBN 978-0486258393. - ↑ Heijungs R. (2005). "On the Use of Units in LCA".
*The International Journal of Life Cycle Assessment*.**10**(3): 174. doi:10.1065/lca2005.02.199. - ↑ Cardarelli F. (2004).
*Encyclopaedia of Scientific Units, Weights and Measures: Their SI Equivalences and Origins*. Transl. by MJ Shields. (3rd revised ed.). Springer. p. 217. ISBN 978-1852336820. - ↑ Dresner S. (1974).
*Units of Measurement: An Encyclopaedic Dictionary of Units Both Scientific and Popular and the Quantities They Measure*. Harvey Miller and Medcalf. p. 13. ISBN 978-0-85602-036-0.