List of Conversion Factors
| BASE UNITS | SI UNIT | SI SYMBOL | COMMON CONVERSIONS OR DEFINITIONS |
| Length | meter | m | 1 m = 1.0936 yd = 39.37 in = 3.281 ft 1 in = 2.54 cm 1 km = 0.621 mi 1 mi = 5280 ft 1 mm = 1000 µm 1000 nm = 1 µm |
| Mass | kilogram | kg | 1 kg = 2.2046 lb 1 lb = 453.59 g 1 lb = 16 oz |
| Time | second | s | 1 h = 3600 s, 1 day = 8.64 x 104 s |
| Temperature | Kelvin | K | 0º K = -273.15º C = -459.67º F K = º C + 273.15 º C = 5/9 (º F - 32º) º F = 1.8º C + 32º |
| Electric Current | Ampere | A or AMP | A●s = C (Coulomb-electric charge) kg●m2/ A●s3 = V (Volt-electric potential) |
| Luminous Intesity | Candela | cd | |
| DERIVED UNITS | SI UNIT | SI SYMBOL | COMMON CONVERSIONS OR DEFINITIONS |
| Volume | cubic meter |
m3 | 1 ft3 = 2.832 x 10-2m3 1 L = 1000 cm3 1 mL = 1 cm3 1 in3 = 16.4 cm3 |
| Energy | Joule | J | 1 J = 0.239 cal = 0.738 ft●lb = 107 erg = 6.24 x 1018 eV = 9.487 x 10-4 Btu |
| Force | Newton | N | 1 N = 0.2248 lb-force 1 N = 0.1019716 kilopond 1 N = 100,000 dynes |
| Pressure | Pascal | Pa | 1 Pa = 1.45 x 10-4 psi 1 atm = 101,325 Pa 1 atm = 760 Torr 1 bar = 105 Pa |
| Power | Watt | W | 1 W = J●s = 0.738 ft●lb-force/s = 3.412 Btu/h = 2.65522 x 103 ft●lb-force/h |