Free water operator tool

Gallons and cubic feet converter

Convert between gallons and cubic feet, either direction. One cubic foot of water holds 7.48 gallons, so gallons divide by 7.48 to reach cubic feet, and cubic feet multiply by 7.48 to reach gallons. The tool shows every step. It is the conversion behind most Class D water volume problems.

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Common questions

How many gallons are in a cubic foot?
One cubic foot of water holds 7.48 gallons.
How do you convert cubic feet to gallons?
Multiply the cubic feet by 7.48. To go the other way, divide gallons by 7.48 to get cubic feet.
How many cubic feet is 1,000 gallons?
About 133.7 cubic feet, because 1,000 divided by 7.48 is 133.69.

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