Convert 21 Gallons to Cubic Feet
How many cubic feet are in 21 gallons? Volume of 21 gallons of beer. 21 gal to cu ft conversion.
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21 U.S. Gallons ≈
2.8072917 Cubic Feet
result rounded
Decimal places
Result in Plain English
21 gallons is equal to about 2.81 cubic feet.
Result as a Fraction
21 gallons
= 539⁄192 cubic feet
= 2 and 155⁄192 cubic feet
In Scientific Notation
21 gallons
= 2.1 x 101 gallons
≈ 2.80729 x 100 cubic feet
Gallons
A U.S. gallon is a unit of volume equal to 128 U.S. fluid ounces, or about 3.785 liters. It should not be confused with the imperial gallon used in the United Kingdom.Common abbreviations: gal, US gal
Cubic Feet
A cubic foot is a unit of volume. It is the size of a cube that is 1 foot on a side. It is about 7.5 gallons or about 28.3 liters.Common abbreviations: cu ft, ft³, ft^3