How many gallons does a 11' x 4' x 5' tank hold?

Answer 1

(42 x 8 x 11) inches cubed equals 3696 cubic inches.

Convert 3696 in.3 to gallons:

1 in.3 = 0.5541 fl.oz. (American)

128 fl.oz (fluid ounces) = 1 gallon

3696 in.3 X 0.5541 fl.oz./in.3 X (1 gallon / 128 fl.oz.) =

= (3696 X 0.5541) / 128

= 16 gallons

Answer: about 16 gallons

Answer 2

1 U.S. gallon is exactly 231 cubic inches. 11 ft x 4 ft x 5 ft = 220 cu ft = 380,160 cu in = 1,645 5/7 gallons (approximately 1,645.714 gallons)