How many US gallons are in 1 cubic foot?

1 cubic foot equals 7.48052 gal.

How do I convert US gallons back to cubic feet?

Use the reverse converter: 1 US gallon equals 0.133681 ft³.

Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.

To convert cubic feet to US gallons, multiply the value by 7.48051948.

gal = ft³ × 7.48051948

40 ft³ × 7.48051948 = 299.22 gal

Cubic Foot (ft³): Used for gas, storage space and appliance capacity in the US. Exactly 28.316846592 litres.
US Gallon (gal): Used for fuel and liquids in the United States. Exactly 3.785411784 litres (231 cubic inches).

How do I convert cubic feet to US gallons?: To convert cubic feet to US gallons, multiply the value by 7.48051948.
How many US gallons are in 1 cubic foot?: 1 cubic foot equals 7.48052 gal.
How many US gallons are in 10 cubic feet?: 10 ft³ equals 74.8052 gal.
How do I convert US gallons back to cubic feet?: Use the reverse converter: 1 US gallon equals 0.133681 ft³.
Is this converter accurate?: Yes. It uses the exact SI/NIST definitions of each unit and shows up to 6 significant digits.