Cubic feet to US gallons
Multiply cubic feet by 7.4805 to get US gallons.
10 ft³ = 74.8052 gal
How to convert cubic feet to US gallons
The US gallon is the US liquid gallon, exactly 231 cubic inches (3.785411784 litres). The cubic foot is a cube one foot on each side — exactly 28.316846592 litres (0.3048³ m³), about 7.48 US gallons.
Worked example — 10 ft³: 10 × 7.4805 = 74.8052 gal.
Cubic feet to US gallons table
| Cubic feet | US gallons |
|---|---|
| 0.5 ft³ | 3.7403 gal |
| 1 ft³ | 7.4805 gal |
| 2 ft³ | 14.961 gal |
| 5 ft³ | 37.4026 gal |
| 10 ft³ | 74.8052 gal |
| 20 ft³ | 149.6104 gal |
| 50 ft³ | 374.026 gal |
| 100 ft³ | 748.0519 gal |
| 500 ft³ | 3,740.2597 gal |
Reverse and related
About cubic feet and US gallons
Cubic foot (ft³)
1 ft³ = 7.4805 galDefinition. A cube one foot on each side — exactly 28.316846592 litres (0.3048³ m³), about 7.48 US gallons
History and origin
The cubic foot is the volume of a cube one foot on each side, built from the international foot. It equals about 28.32 litres, or roughly 7.48 US gallons.
Current use
Cubic feet measure the capacity of refrigerators and freezers, natural-gas supply and shipping volume in the United States.
Source: NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents)
US gallon (gal)
1 gal = 0.133681 ft³Definition. The US liquid gallon, exactly 231 cubic inches (3.785411784 litres)
History and origin
The US gallon derives from the old English wine gallon of 231 cubic inches, a value the United States kept when Britain moved to a larger imperial gallon in 1824. It equals exactly 3.785411784 litres.
Current use
The gallon is the everyday US unit for fuel, milk and paint; the imperial gallon used in the UK and Canada is about 20 percent larger.
Source: NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents)
Where people use this
Cubic feet: appliance capacity, natural gas, shipping. US gallons: fuel in the US, large containers, paint. 1 cubic foot is about 7.48 US gallons.
Every value is carried to full double precision; the display is rounded.
Both units are defined in NIST Handbook 44, Appendix C §2 (U.S. Customary Units) and §5 (Tables of Equivalents).
Questions people ask
How many gallons in a cubic foot?
One cubic foot is about 7.48 US gallons.
How many gallons is 10 cubic feet?
10 cubic feet is about 74.8 gallons.
How many cubic feet is 100 gallons?
100 US gallons is about 13.4 cubic feet.