Predefined Units List of predefined units Acceleration¶ gravity Amount¶ mol Angle¶ deg Area¶ acre hectare Charge¶ coul farad Conductance¶ siemens Currency¶ Dollar Electric Current¶ amp coul ohm siemens volt Electromotive Force¶ volt Energy¶ btu cal ev joule kcal mev Force¶ dyne gmf kgf lbf newton ozf tonf Frequency¶ dyne Inductance¶ henry Length¶ angstrom cm ft in km m mi mm yd Luminous Intensity¶ cd Magnetic Field¶ gauss tesla Magnetic Flux¶ maxwell weber Mass¶ gm kg lb mg slug ton oz Power¶ hp kw watt Pressure¶ atm bar pa psi Resistance¶ ohm Speed¶ knot kph mph Temperature¶ deg kelvin Time¶ da hr mo mn qtr sec wk yr Volume¶ fl_oz gal liter ml pt