Conversion Formula
$$ft³ = gal \times 0.133681$$
Multiply the value in US Gallon by 0.133681 to get Cubic Foot.
gal to ft³ Conversion Table
| US Gallon (gal) | Cubic Foot (ft³) |
|---|---|
| 0.1 | 0.0133681 |
| 0.5 | 0.0668403 |
| 1 | 0.133681 |
| 2 | 0.267361 |
| 5 | 0.668403 |
| 10 | 1.33681 |
| 25 | 3.34201 |
| 50 | 6.68403 |
| 100 | 13.3681 |
| 250 | 33.4201 |
| 500 | 66.8403 |
| 1,000 | 133.681 |
gal to ft³ in Engineering
Volume conversions are critical for concrete and earthwork quantities (cubic yards), water storage (acre-feet, million gallons), petroleum (barrels), and fluid system design (liters, gallons). Accurate volume conversion prevents costly material estimation errors.
US Gallon: Standard US liquid volume unit. Exactly 231 cubic inches. Used for water, fuel, and chemical volumes.
Cubic Foot: Primary US unit for gas volume, concrete, and storage tank capacity. Used in HVAC air volume calculations.