Speed unit conversion table
This table contains conversions between almost all speed(velocity) units. Some units of speed(velocity) are common and some are relatively rare. This is a good query tool. Speed Converter
| Name of unit | Symbol | Definition | Relation to SI units |
|---|---|---|---|
| footper hour | fph | ≡ 1 ft/h | = 8.4 6×10 −5 m/s |
| footper minute | fpm | ≡ 1 ft/min | = 5.08 ×10 −3 m/s |
| footper second | fps | ≡ 1 ft/s | = 3.048 ×10 −1 m/s |
| furlongper fortnight | ≡ furlong/fortnight | ≈ 1.663 095×10 −4 m/s | |
| inchper hour | iph | ≡ 1 in/h | = 7.0 5×10 −6m/s |
| inch per minute | ipm | ≡ 1 in/min | = 4.2 3×10 −4m/s |
| inch per second | ips | ≡ 1 in/s | = 2.54 ×10 −2 m/s |
| kilometre per hour | km/h | ≡ 1 km/h | = 2. 7×10 −1 m/s |
| knot | kn | ≡ 1 nmi/h = 1.852 km/h | = 0.51 4 m/s |
| knot(Admiralty) | kn | ≡ 1 NM (Adm)/h = 1.853 184 km/h[ citation needed] | = 0.514 773 m/s |
| mach number | M | Ratio of the speed to the speed of sound [note 1]in the medium (unitless). | ≈ 340 to 295 m/s |
| metre per second(SI unit) | m/s | ≡ 1 m/s | = 1 m/s |
| mile per hour | mph | ≡ 1 mi/h | = 0.447 04 m/s |
| mileper minute | mpm | ≡ 1 mi/min | = 26.8224 m/s |
| mile per second | mps | ≡ 1 mi/s | = 1 609.344 m/s |
| speed of lightin vacuum | c | ≡ 299 792458 m/s | = 299 792458 m/s |
| speed of soundin air | s | 1225to 1062 km/h(761–660 mph or 661–574 kn) [note 1] | ≈ 340 to 295 m/s |
| |||