Each unit with its abbreviation is followed by its equivalent in one or other units of the same quantity. In the text, the metric equivalents are shown only to the number of significant figures consistent with the values for the English units.
Inch (in) - 2.54 centimeter (cm)
Centimeter (cm) - 0.3937 inch (in)
Foot (ft) - 0.3048 meter (m)
Meter (m) - 3.2808 feet (ft); 39.37 inches (in)
Mile (ml) - 1.6094 kilometer (km)
Kilometer (km) - 0.6214 mile (ml)
Acre (a) - 43,560 square feet (ft^2); 0.4047 hectare (ha)
Hectare (ha) - 10,000 square meters (m^2); 2.471 acres (a)
Square mile (mi2) - 640 acres (a); 259 hectares (ha); 2.59 square kilometers (km2)
Square kilometer (km2) 100 hectares (ha), 0.384 square mile (mi2)
Square foot (ft2) _ 0.0929 square meter (m2)
Square meter (m2) 10.764 square feet (ft2)
Gallon (gal) - 3.7853 liters (1); 0.00378 cubic meter (m3)
Liter (1) - 0.2642 gallon (gal); 1.057 quarts (qt)
Cubic meter (m3) - 264.173 gallons (gal); 1,000 liters (1)
Gallon per minute (gpm) - 3.79 liters per minute (1/m)
Liter per minute (l/m) - 0.264 gallon per minute (gpm)
Gallon per minute per foot of drawdown (gpm/ft) - 0.21 liter per minute per meter of drawdown (lpm/m)
Liter per minute per meter of drawdown (lpm/m) - 4.92 gallons per minute per foot of drawdown (qpm/ft)
Million-gallons per day {MOD) - 3780 cubic meters per day (m3/d)
Acre-foot (ac-ft) - 1,233.5 cubic meters (m3)
Thousand acre-feet (ac-ft) - 1,233,500 cubic meters (m3); 1.23 cubic hectometers (hm3)
Cubic hectometer (hm3) - Million cubic meters (m3); 810.71 acre-feet (ac-ft)
Minute per inch (mpi) - 0.39 minute per centimeter (m/cm)
Minute per centimeter (m/cm) - 2.54 minutes per inch (mpi)
Milligram per liter (mg/l) - 1 part per million (ppm)
Degrees Celsius (°C) - 0.555 [Degrees Fahrenheit (°F) - 32]
Degrees Fahrenheit (°F) - 1.8 [Degrees Celsius (°C)] + 32
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