Unit conversion table

Length

inches	x 25.4 = millimeters (mm.)	x 0.0394 = inches
feet	x 0.305 = meters (m.)	x 3.281 = feet
miles	x 1.609 = kilometers (km.)	x 0.621 = miles

Volume

cubic inches	x 16.385 = cubic centimeters	x 0.061 = cubic inches
imperial quarts	x 1.137 = liters	x 0.88 = imperial quarts
imperial pints	x 0.568 = liters	x 1.76 = imperial pints
imperial quarts	x 1.201 = US quarts	x 0.833 = imperial quarts
american quarts	x 0.946 = liters	x 1.057 = US quarts
imperial gallons	x 4.546 = liters	x 0.22 = imperial gallons
imperial gallons	x 1.201 = US gallons	x 0.833 = imperial gallons
US gallons	x 3.785 = liters	x 0.264 = US gallons

Weight

ounces	x 28.35 = grams	x 0.035 = ounces
pounds	x 0.454 = kilograms	x 2.205 = pounds

Force

ounces - strength	x 0.278 = newtons	x 3.6 = ounce - force
pounds - force	x 4.448 = newtons	x 0.225 = pounds - force
newtons	x 0.1 = kilogram - force	x 9.81 = newtons

Pressure

pounds - force per square inch	x 0.070 = kilogram - force per sq. centimeter	x 14.223 = pounds-force per sq. inch
pounds - force per square inch	x 0.068 = atmosphere (atm)	x 14.696 = pounds-force per sq. inch
pounds - force per square inch	x 0.069 = bars	x 14.5 = pounds-force per sq. inch
pounds - force per square inch	x 6.895 = kilopascals	x 0.145 = pounds - force per square inch
kilopascals	x 0.01 = kilogram - force per sq. centimeter	x 98.1 = kilopascals
millibars	x 100 = pascals	x 0.01 = millibars
millibars	x 0.0145 = pounds - force per square inch	x 68.974 = millibars
millibars	x 0.75 = millimeters of mercury	x 1.333 = millibars
millibars	x 0.401 = inches of water	x 2.491 = millibars
millimeters of mercury	x 0.535 = inches of water	x 1.868 = millimeters of mercury
inches of water	x 0.036 = pounds - force per square inch	x 27.68 = inches of water

Torque

lb - inches	x 1.152 = kilogram centimeters	x 0.868 = lb - inches
lb - inches	x 0.113 = newton meters	x 8.85 = lb - inches
lb - inches	x 0.083 = lb - ft	x 12 = lb - inches
pound - feet	x 0.138 = kilograms	x 7.233 = lb - ft
pound - feet	x 1.356 = newton meters	x 0.738 = lb - ft
newtonmeters	x 0.102 = kilograms	x 9.804 = newton meters

Power

Horsepower

x 745.7 = watt

x 0.0013 = horsepower

Speed

miles per hour

x 1.609 = kilometers per hour

x 0.621 = miles per hour

Fuel consumption

miles per gallon imperial	x 0.354 = kilometers per liter	x 2.825 = miles per gallon imperial
miles per gallon US	x 0.425 = kilometers per liter	x 2.352 = US miles per gallon
Usually the number of miles per gallon is converted to liters per 100 kilometers:
miles per gallon imperial x 1/100 km. = 282
miles per gallon US x 1/100 km. = 235

Temperature

degrees Fahrenheit = (degrees Celsius x 1.8) + 32
degrees Celsius = (degrees Fahrenheit - 32) x 0.56