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Standard Units
واحدهای استانداردsecond sec 1 s minute min 60 s hour hr 60 min hour hour 1 hr alternate symbol hour h 1 hr alternate symbol day day 24 hr shake shake 10 ns Hertz Hz 1 s^-1 international foot ft 0.3048 m inch in 1.0/12.0 ft international mile mile 5280.0 ft international mile mi 1 mile alternate symbol milli-inch mil 0.001 in Parsec pc 3.085678e16 m League league 3 mile Astronomical Unit ua 1.49598e11 m Astronomical Unit AU 1.49598e11 m alternate symbol yard yd 3 ft Angstrom Ang 1e-10 m Angstrom \\AA 1 Ang alternate symbol furlong furlong 220 yd fathom fathom 6 ft Rod rd 16.5 ft U.S. survey foot sft (1200./3937.) m U.S. survey mile smi 5280 sft also called statue mile point pt 1./72. in Typeface Point pica pica 1./6. in Typeface Pica Celsius C 1 K -273.15 Rankine R 5.0/9.0 K Fahrenheit F 1 R -459.67 gram g 0.001 kg This is case sensitive. gram gm g (alternate symbol) pound mass lbm 0.45359237 kg (avoirdupois) Troy pound lbt 0.3732417 kg (apothecary) carat (metric) carat 0.2 g slug slug 1 lb sec^2/ft snail snail 1 lb sec^2/in Short Ton ton 2000 lbm Long Ton ton_l 2240 lbm Ounce oz 28.34952 g (avoirdupois) Grain gr 64.79891 mg Pennyweight dwt 1.55174 g Newton N 1 kg m/s^2 Dyne dyn 1e-5 N pound force lb lbm G pound force lbf lbm G poundal poundal 1 lbm ft/sec^2 kilopound kip 1000 lbf kilogram force kgf kg G Joule J 1 N m British Therm. Unit BTU 1055.056 J (International Table) British Therm. Unit Btu 1 BTU alternate symbol British Therm. Unit BTU_th 1054.350 J (Thermochemical) calorie cal 4.1868 J (International Table) calorie cal_th 4.184 J (Thermochemical) Calorie Cal 4.1868 kJ (nutritionists) electron volt eV 1.602177e-19 J erg erg 1e-7 J Ton of TNT TNT 4.184e9 J Watt W 1 J/s Horse Power hp 550 ft lb/s bar bar 1e5 N/m^2 Pascal Pa 1 N/m^2 Pounds per sq. inch psi 1 lb/in^2 Pounds per sq. ft. psf 1 lb/ft^2 kilo psi ksi 1000.0 psi atmospheres atm 1.01325e5 N/m^2 inches of Mercury inHg 3.387 kPa millimeters Mercury mmHg 0.1333 kPa Torr torr 1.333224 Pa Liter L 1/1000.0 m^3 gallon gal 3.785412 L Pint (U.S. liquid) pint 1/8. gal Quart (U.S. liquid) qt 2 pint Pint (U.S. dry) dpint 0.5506105 L Quart (U.S. dry) dqt 2 dpint
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