Cubic Feet to Gallons Calculator
Knowing the gallon capacity of a space measured in cubic feet is essential for sizing containment, calculating coolant volumes, and ordering fluids for oil-filled equipment. This calculator handles the conversion so you do not have to remember the factor.
Enter a volume in cubic feet and the result appears in US gallons and liters. The output updates in real time as you type.
Conversion Formula
gallons = ft³ × 7.48052
1 cubic foot = 7.48052 US gallons
For liters, multiply gallons by 3.78541. For example, 10 cubic feet equals 74.81 gallons, which is about 283.17 liters.
Frequently Asked Questions
How many gallons are in one cubic foot?
One cubic foot equals approximately 7.48052 US gallons. This conversion is based on the US liquid gallon, which is defined as 231 cubic inches. Since one cubic foot is 1,728 cubic inches, dividing 1,728 by 231 gives 7.48052.
When would an electrician need to convert cubic feet to gallons?
Electricians may need this conversion when sizing enclosures that contain oil-filled transformers, calculating coolant volumes, or determining the capacity of tanks and vaults. Knowing volume in gallons helps with ordering fluids and meeting code requirements for containment.
Is a US gallon the same as an imperial gallon?
No. A US liquid gallon is 231 cubic inches (3.78541 liters), while an imperial gallon is 277.42 cubic inches (4.54609 liters). This calculator uses the US gallon, which is the standard in the United States.