Unit Conversion:

Force Units: 1 N = 1 kg m/s2 = 0.2248 lb 1 kg weighs 2.205 lb	Length Units: 1 m = 39.37 in = 3.281 ft 1 mi = 5280 ft = 1.609 km 1 in = 2.54 cm 1 light-year = 9.46·1015 m 1 Å = 10-10 m	Energy Units: 1 J = 1 kg m2/s2 1 cal = 4.186 J 1 kWh = 3.6 MJ 1 eV = 1.60218·10-19 J 1 megaton = 4·1015 J 1 Btu = 1055 J
Volume Units: 1 m3 = 103 L 1 L = 103 cm3 = 0.03531 ft3 1 US gal = 3.786	Power Units: 1 W = 1 J/s = 1.341·10-3 hp 1 hp = 745.7 W	Velocity Units: 1 m/s = 3.6 km/h = 2.237 mi/h 1 km/h = 0.2778 m/s
Angle Units: 1° = 0.01745 rad 1 rad = 57.30° p rad = 180°	Pressure Units: 1 Pa = 1 N/m2 = 1.45·10-4 lb/in2 1 atm = 0.101325 MPa = 14.7 lb/in2 1 mm Hg = 133.3 Pa