# Module:Convert/documentation/conversion data

## Conversions

### Speed

| cm/h | cm/h | 0.01/60/60 | centimetre per hour | centimetres per hour | centimeter per hour | centimeters per hour | in/h | Metre per second |
| --- | --- | --- | --- | --- | --- | --- | --- | --- |
| cm/s | cm/s | 0.01 | centimetre per second | centimetres per second | centimeter per second | centimeters per second | in/s | Metre per second |
| cm/year | cm/year | 0.01/365.2425/24/60/60 | centimetre per year | centimetres per year | centimeter per year | centimeters per year | in/year | Orders of magnitude (speed) |
| foot/s | ft/s | 0.3048 | foot per second | foot per second | m/s | Foot per second |  |  |
| ft/min | ft/min | 0.00508 | foot per minute | feet per minute | m/min | Feet per second |  |  |
| ft/s | ft/s | 0.3048 | foot per second | feet per second | m/s | Feet per second |  |  |
| furlong per fortnight | ~furlong per fortnight | 1.397/8,400 | furlong per fortnight | furlongs per fortnight | km/h mph | FFF system |  |  |
| in/h | in/h | 0.0254/60/60 | inch per hour | inches per hour | cm/h | Inch |  |  |
| in/s | in/s | 0.0254 | inch per second | inches per second | cm/s | Inch |  |  |
| in/year | in/year | 0.0254/365.2425/24/60/60 | inch per year | inches per year | cm/year | Orders of magnitude (speed) |  |  |
| isp | s | 9.80665 | second | km/s | Specific impulse |  |  |  |
| km/d | km/d | 1.1574074074074074e-2 | kilometre per day | kilometres per day | kilometer per day | kilometers per day | mi/d | Orders of magnitude (speed) |
| km/h | km/h | 10/36 | kilometre per hour | kilometres per hour | kilometer per hour | kilometers per hour | mph | Kilometres per hour |
| km/s | km/s | 1000 | kilometre per second | kilometres per second | kilometer per second | kilometers per second | mi/s | Metre per second |
| kn | kn | 4.63/9 | knot | km/h mph | Knot (unit) |  |  |  |
| kNs/kg | kN&#8209;s/kg | 1000 | kN&#8209;s/kg | kN&#8209;s/kg | isp | Specific impulse |  |  |
| m/min | m/min | 1/60 | metre per minute | metres per minute | meter per minute | meters per minute | ft/min | Metre per second |
| m/s | m/s | 1 | metre per second | metres per second | meter per second | meters per second | ft/s | Metre per second |
| Mach | Mach | 0 | mach | Mach | Mach | km/h mph | Mach number |  |
| mi/d | mi/d | 1.8626666666666667e-2 | mile per day | miles per day | km/d | Orders of magnitude (speed) |  |  |
| mi/s | mi/s | 1609.344 | mile per second | miles per second | km/s | Mile |  |  |
| mm/h | mm/h | 0.001/60/60 | millimetre per hour | millimetres per hour | millimeter per hour | millimeters per hour | in/h | Metre per second |
| mph | mph | 0.44704 | mile per hour | miles per hour | km/h | Miles per hour |  |  |
| Ns/kg | N&#8209;s/kg | 1 | N&#8209;s/kg | N&#8209;s/kg | isp | Specific impulse |  |  |
| si tsfc | g/(kN⋅s) | 1/101972/9.80665 | invert | g/(kN⋅s) | g/(kN⋅s) | tsfc | Thrust specific fuel consumption |  |
| tsfc | lb/(lbf⋅h) | 1/9.80665/3600 | invert | lb/(lbf⋅h) | lb/(lbf⋅h) | si tsfc | Thrust specific fuel consumption |  |
| cm/y | =cm/year |  |  |  |  |  |  |  |
| cm/yr | =cm/year |  |  |  |  |  |  |  |
| in/y | =in/year |  |  |  |  |  |  |  |
| in/yr | =in/year |  |  |  |  |  |  |  |
| knot | =kn |  |  |  |  |  |  |  |
| knots | =kn |  |  |  |  |  |  |  |
| kph | =km/h |  |  |  |  |  |  |  |
| mi/h | =mph |  |  |  |  |  |  |  |
| mm/s | ==mm/s | default = in/s | link = Metre per second | } |  |  |  |  |