Aviation-related Units

Website Links For
Units

Information About

Aviation-related Units

Units used in , with approximate SI equivalents:

Linear measures (measures of Length )

m - Metre , SI unit

km - Kilometre

ft - Foot , 0.3048 metres

in - Inch , 0.0254 metres

mi - Mile , 1609 metres

nm - Nautical Mile , 1851,852 metres, equal to one Minute Of Arc of Latitude

Measures of Area

m&² - Square Metre , SI unit

ft&² - Square Foot , 0.0929 square metres

Measures of Mass

kg - Kilogram , SI unit

lb - Pound , 0.4536 kg

Measures of Force

kN - kilo Newton , SI unit with multiplier

kgf - Kilogram-force , 0.0098 kN

lbf - Pound-force , 0.00445 kN

Measures of Power

kW - kilo Watt , SI unit with multiplier

PS - '' Pferdestärke '' (metric horsepower), 0.7355 kW

hp - Horsepower , 0.7457 kW

Measures of Speed

Mach - Mach Number , the ratio of the aircraft's flight speed to the Speed Of Sound there - strictly not a unit, but a Dimensionless Number . Depends on temperature only, equaling approximately 340 m/s (660 kt) at Standard Conditions For Temperature And Pressure at sea level and lowering with altitude.

m/min - metres per Minute , 0.0166... m/s

m/s - Metres Per Second , SI unit, equals 1.944 kt

km/h - Kilometres Per Hour , 0.2778 m/s

ft/min - Feet Per Minute , 0.0057 m/s

mph - Miles Per Hour , 0.4470 m/s

kt - Knot , nautical miles per hour, 0.5144 m/s