Also known as: gal.
GAL has various meanings in the Units Of Measurement category. Discover the full forms, definitions, and usage contexts of GAL in Units Of Measurement.
A volumetric measure equal to 4 quarts (231 cubic inches) used to measure fuel oil. One barrel equals 42 gallons. A US gallon (3.785 liters) is 20% smaller than an Imperial gallon (4.546 liters). (gal) Imperial gallon. A measure of volume. 1 gal = 4.54596 litre (US) A measure of volume. 1 US gallon = 3.785 litre
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