(cu in) / 231 = gallons
1 cubic inch = 0.004 329 004 329 gallon [US, liquid]
1 cubic mile = 1.10111715 × 1012 US gallons.
5 litres is 305 cubic inches.
1,310,000,000 cubic kilometers. Each cubic km = 264,172,052,360 gallons
One square foot is 144 square inches, so if you cover that with an inch of water you'll need 144 cubic inches. One gallon is 231 cubic inches. Dividing 231 by 144 = 0.62 gallons. So a plant growing in about 1 square foot of soil needs a bit more than half a gallon of water a week to equal 1 inch. A 4 ft x 8 ft bed = 32 sq. ft. so at 0.62 gal/sq.ft. you'd want to give it about 20 gallons of water a week.
Water volume of 35.2 km3 (28,500,000 acre·ft)----- 28.5 million acre-feet x 43,560 square feet in an acre = 1.24 trillion cubic feet x 8.1 (gallons in a cubic foot) = 10 trillion gallons
Use this formula: cubic inches x 0.004329 = gallons
To convert cubic inches to gallons, divide cubic inches by 231:Cubic inches / 231 = US gallons
To convert cubic inches to gallons, divide the number of cubic inches by 231. This will give you the equivalent amount in gallons.
Conversion: cubic inches x 0.003605 = Imperial gallons
One cubic inch is equal to 0.004329004 gallons. (cubic inches) * 0.004329004 = gallons
If you remember the following facts, you'll never go wrong: ==> 1 cubic foot = 1,728 cubic inches ==> 231 cubic inches = 1 gallon
1 US gallon = 231 cubic inches # of gallons = (# of cubic inches) / 231
Assuming it is round, (1) convert all measurements to feet. (2) Use the formula for the volume of a cylinder to get the volume in cubic feet. (3) Convert from cubic feet to gallons. As an alternative, you can also convert all measurements to inches, and in the final step, convert from cubic inches to gallons.
gallons x 231 = cubic inches
For me I would convert to cubic feet and then to gallons. 30" : 2.5 ft 18" : 1.5 ft 6". : 0.5 ft Multiply all to get 1.875 cubic feet volume water is 7.48 gallons per cubic foot volume so 7.48 x 1.875 is 14.025 gallons
To convert gallons to cubic inches, you would multiply by 231 (since there are 231 cubic inches in a gallon). So, 13.6 gallons would be 13.6 x 231 = 3141.6 cubic inches.
0.004329