Medium Voltage Application Guide

RESOURCES
6.2 Metric/Imperial Conversion Factors
Length
1 mile = 1.609 km 1 km = 0.621 mile
1 yd = 0.914 m 1 m = 1.09 yd
1 ft = 0.305 m 1 m = 3.28 ft
1 in = 25.4 mm 1 mm = 0.039 in
Mass
1 oz = 28.3 g 1 g = 0.0352 oz
1 lb = 0.454 kg 1 kg = 2.20 lb
Area
1 in 2 = 6.45 cm 2 1 cm 2 = 0.155 in 2
1ft 2 = 0.093 m 2 1 m 2 = 10.8 ft 2
Volume
1 in 3 = 16.4 cm 3 1 cm 3 = 0.061 in 3
1 ft 3 = 0.028 m 3 1 m 3 = 35.3 ft 3
1 pint = 0.568 l 1 l = 1.76 pint
1 gallon (imperial) = 4.55 l 1 l = 0.220 gallon
1 gallon (US) = 3.79 l 1 l = 0.264 gallon
Velocity
1 mile/h = 1.61 km/h 1 km/h = 0.622 mile/h
1 knot = 1.85 km/h 1 km/h = 0.540 knot
Power
1 hp = 0.746 kW 1 kW = 1.34 hp
1 kcal/h = 1.16 W 1 W = 0.860 kcal/h
Energy
1 cal = 4.187 J 1 J = 0.239 cal
1 kWh = 3.6 MJ 1 MJ = 0.278 kWh
Force
1 lbf = 4.45 N 1 N = 0.225 lbf
1 kgf = 9.807 N 1 N = 0.102 kgf
Moment of Inertia
1 ft·lb 2 = 0.413 Nm 2 1 Nm 2 = 2.42 ft·lb 2
1 ft·lb 2 = 4.054 kgm 2 1 kgm 2 = 0.247 ft·lb 2
Temperature
freezing point = 32 °F = 0 °C
boiling point = 212 °F = 100 °C
typical ambient = 104 °F = 40 °C
to convert a temperature from Fahrenheit to degrees Celsius: C = (t°F - 32) x 0.556
to convert a temperature from degrees Celsius to Fahrenheit: F = t°C x 1.8 +32
For additional information on the International System of Units, see http://www.bipm.org.
Page 216 Medium Voltage Application Guide 710-12280-00A