1.31 gal
1 gallon = 16 cups
1 cup = 0.06 gallon
21 gallons is 336 cups (16 cups per gallon).
21 cups is 1.3 (1.3125) gallons (US).
That is approximately 21 cups of sugar.
1.31 gal 1 gallon = 16 cups 1 cup = 0.06 Gallon
1 gallon = 4 quarts = 16 cups 2 gallons = 8 quarts = 21 cups . . 8 gallons = 32 quarts = 128 cups
21/4cups
5.25 gallons 84 cups 42 pints 19.87 L (liters)
21 gal 1 gallon = 16 cups 1 cup = 0.06 gallon
2.4 Cups - see Sources/Related Links for a converter to use.
5.25 gallons
21 CUPS
5.25 qts. 1 quart = 4 cups And 1 cup = 0.25 quart. There are 32 US fluid ounces (2 pints, or 4 cups) in 1 US quart (946.4 ml). There are 40 Imperial fluid ounces (2 pints) in 1 Imperial quart (1,136 ml). Note that there is no 'cup' in the Imperial system, it is best to use pints or half pints, and not 'cups'.