Convert US gallons to cubic feet

1 US gallon = 0.133681 cubic feet · ft³ = gal ÷ 7.480519481

gal
Cubic feet
0.133681ft³

1 US gallon = 0.133681 cubic feet

When you need this conversion

This conversion goes from US gallons, the fuel and liquid volume unit in the US, to cubic feet, used for appliance capacity and freight in the US. Both measure the same physical quantity, so the conversion is exact — the difference is which unit your source, tool, or region happens to use.

US gallons to cubic feet conversion table

Conversion table from US gallons to cubic feet
US gallons (gal)Cubic feet (ft³)
1 gal0.133681 ft³
2 gal0.267361 ft³
3 gal0.401042 ft³
5 gal0.668403 ft³
10 gal1.3368 ft³
15 gal2.0052 ft³
20 gal2.6736 ft³
25 gal3.342 ft³
50 gal6.684 ft³
75 gal10.026 ft³
100 gal13.3681 ft³
250 gal33.4201 ft³
500 gal66.8403 ft³
1,000 gal133.68 ft³

The formula

ft³ = gal ÷ 7.480519481

Because both units measure volume, the conversion is a single multiplication by a fixed factor. That factor never changes, so the result is exact.

Convert the other way

Cubic feet to US gallons →

Related volume conversions

All volume conversions →

Frequently asked questions

How many cubic feet are in a US gallon?
There are 0.133681 cubic feet in 1 US gallon. The formula is ft³ = gal ÷ 7.480519481.
How do you convert US gallons to cubic feet?
Use the formula ft³ = gal ÷ 7.480519481. For example, 10 US gallons equals 1.3368 cubic feet.
Is the US gallons to cubic feet conversion exact?
Yes. US gallons and cubic feet are both units of volume, related by an exact defined factor. Displayed results are rounded for readability.
What is gal short for?
gal is the standard symbol for US gallon (also written as gallons). ft³ is the symbol for cubic foot.