Length mm cm metres km inches feet yards miles nmiles

Area mm2 cm2 m2 in2 ft2 yd2 acres hectares

Mass g kg ounce lb (pound) long cwt UK short cwt US metric ton long ton UK short ton US

Volume m3 cc ltr in3 ft3 yd3 gallon (US) gallon (Imp)

Volume Flow l/s l/m m3/min m3/h ft3/min (cfm) yd3/h gal (US)/min

Speed m/s m/min ft/s ft/m km/h mph Knot

Torque Nm kpm in.lbf ft.lbf

Pressure Pa; N/m2 bar kp/cm2 lbf/in2; psi

Force N (newton) kp (kilopound) lbf (pound-force)

Vacuum (Gauge) mbar In Hg Torr psi % vacuum

Energy J; Nm; Ws kWh kpm ft.lbf (foot pound force) Btu (Brit. thermal unit)

Specific Energy J/l; kJ/m3 kWh/m3 hp (US); min/ft3

Power W; Nm/s; J/s kW kpm/s hp (US) ft.lbf/s

Temperature Kelvin Celsius Rankine Fahrenheit

Density kg/m3 g/cm3 lb/in3 lb/ft3