Herleidingsfactoren voor niet-SI naar SI

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1 A .= 0,1 nm
1 mile .= 1609,3 m
1 yd .= 3 ft = 36 in = 0,914 m
1 USA gallon .= 3,785*10-3m3
1 lb .= 16 oz = 0,454 kg
1 oz/cu ft .= 1 kg/m3
1 kgf .= 9,80665 N
1 lbf .=4,44822 N
1 atm .= 0,098 Mpa
1 bar .= 0,1 Mpa
1 mm H2O .= 9,80665 Pa
1 mm Hg .= 133,1 Pa
1 1bf/sq in .= 6894,76 Pa
1 1b/sq ft .= 47,8803 Pa
1 cal .= 4,1868 J
1 kcal/h .= 4,163 W
1 kWh .= 3,6 MJ
1 pk .= 0,735 kW
1 Btu .= 1,05506 kJ
1 Btu/h .= 0,293071 W
1 Btu/lb*°F .= 1kcal/kg °C = 4,1868 kJ/kgK
1 Btu/lb .= 2,326 kJ/kg
1 Btu/sq ft*hr*°F .= 5,67829 W/m2K
1 Btu/sq ft*hr .= 3,1546 W/m2
1 Btu/°F .= 1,89911 J/K
1 Btu*in/sq ft*ht*°F .= 0,144229 W/mK
1 m2*h*°C/kcal .= 0,859845 m2K/W
1 sq ft*hr*°F/Btu .= 0,176109 m2K/W
1 kg/m2*h*mm Hg .= 2,08351 10-6 s/m
1 hoekgraad .= π/180 rad ≈ 17,45 mrad
1 ft candle .= 10,76391 lux