Direct conversion
Convert gallon (US) [gal US] to cubic foot [ft³] instantly with formula, examples, chart, and FAQs.
1 gallon (US) [gal US] = 0.133681 cubic foot [ft³]
1 gallon (US) [gal US] = 0.133681 cubic foot [ft³]
Example: 1 gallon (US) [gal US] equals 0.133681 cubic foot [ft³].
Volume conversions use cubic metre as the reference unit. US liquid units, metric litres, and cubic units are converted with fixed factors stored in the unit table.
Displayed results are rounded for readability. The calculator keeps enough precision for everyday use and switches to scientific notation for very large or very small values. Last reviewed: 2026-05-21.
The US gallon is a liquid volume unit equal to exactly 3.785411784 liters.
HistoryThe US gallon developed from older English wine-gallon measures and differs from the UK imperial gallon.
Current useUS gallons are common for fuel, water, paint, tanks, pools, and household liquid measurements in the United States.
The cubic foot is a volume unit equal to the space inside a cube one foot on each side.
HistoryCubic feet come from foot-based customary measurement and are used for three-dimensional capacity.
Current useCubic feet are used for refrigerators, shipping boxes, storage, construction materials, and airflow ratings.
| gallon (US) [gal US] | cubic foot [ft³] |
|---|---|
| 1 | 0.133681 |
| 2 | 0.267361 |
| 5 | 0.668403 |
| 10 | 1.336806 |
| 20 | 2.673611 |
| 25 | 3.342014 |
| 50 | 6.684028 |
| 100 | 13.368056 |
| 1000 | 133.680556 |
Use this formula: 1 gallon (US) [gal US] = 0.133681 cubic foot [ft³] Enter your value in the calculator and the result updates instantly.
1 gallon (US) [gal US] equals 0.133681 cubic foot [ft³].
Yes. Use the swap button in the calculator or open the related reverse conversion link when it is listed on this page.