Table of Conversion Factors for SI Units
Measurement | SI to U.S. standard | U.S. standard to SI |
Activity | 1 TBq = 27 Ci | 1 Ci = 0.037 TBq |
Length | 1 cm = 0.3937008 in 1 m = 3.280840 ft | 1 in = 2.540000 cm 1 ft = 0.3048000 m |
Thickness | 1 mm = 0.03937008 in | 1 in = 25.40000 mm |
Mass (weight) | 1 kg = 2.204622 lb 1 g = 0.03527397 oz | 1 lb = 0.4535924 kg 1 oz = 28.34952 g |
Pressure | 1 kPa = 0.1450377 psi 1 Bar = 100 kPa = 14.504 psi 1 kPa = 7.5 mm Hg | 1 psi = 6.894757 kPa 1 psi = 0.06895 Bar |
Radiation level | 1 Sv/hr = 100 rem/hr | 1 rem/hr = 0.01 Sv/hr |
Volume (liquid) | 1 L = 0.2641720 gal 1 mL = 0.03381402 oz 1 m3 = 35.31466 ft3 | 1 gal = 3.785412 L 1 oz = 29.57353 mL 1 ft3 = 0.02831685 m3 |
Density | 1 kg/m3 = 0.06242797 lb/ft3 | 1 lb/ft3 = 16.01846 kg/m3 |
Force | 1 Newton = 0.2248 Pound-force | 1 Pound-force = 4.483 N |
Abbreviation for units of measure are as follows:
Unit of measure and abbreviation:
(SI): millimeter, mm; centimeter, cm; meter, m; gram, g; kilogram, kg; kiloPascal, kPa; liter, L; milliliter, mL; cubic meter, m3; Terabecquerel, TBq; Gigabecquerel, GBq; millisievert, mSv; Newton, N;
(U.S.): Inch, in; foot, ft; ounce, oz; pound, lb; psig, psi; gallon, gal; cubic feet, ft3; Curie, Ci; millicurie, mCi; millirem, mrem.
49 C.F.R. §171.10