1 inch = 0.0254 meters = 2.54 centimeters = 25.4 millimeters

1 centimeter = 0.3937 inches = 10 millimeters = 0.01 meters

1 millimeter =0.1 centimeters = 0.001 meters = 0.03937 inches

1 kilometer = 3280.84 feet = 0.62137 miles = 1093.67 yards

1 meter = 1000 millimeters = 100 centimeters = 39.37 inches = 3.28084 feet= 1.09361 yards

1 mile = 1609.34 meters = 1.60934 kilometers = 5280 feet = 1760 yards

1 yard = 914.4 millimeters = 91.44 centimeters = 36 inches = 0.9144 meters = 3 feet

Temperature in °C = (temperature in °F − 32) ÷ 1.8

Temperature in °F = (temperature in °C × 1.8) + 32

Horsepower = watts ÷ 745.7 × efficiency

1 BTU = 0.29307107 watt-hours

1 watt = 3.412 BTU/hour

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