Convert 21 Cups to Gallons
How big is 21 cups? How many gallons are in 21 U.S. cups? 21 cups to gal conversion.
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21 U.S. Cups =
1.3125 U.S. Gallons
exact result
Decimal places
Result in Plain English
21 cups is equal to about 1.31 gallons.
To a Percentage
21 cups ≈ 131% of a gallon.
Result as a Fraction
21 cups
= 21⁄16 gallons
= twenty-one sixteenths of a gallon
= 1 and 5⁄16 gallons
In Scientific Notation
21 cups
= 2.1 x 101 cups
= 1.3125 x 100 gallons
Cups
A U.S. cup is a unit of volume equal to 1/16th of a U.S. gallon, or about 236 milliliters.
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