Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 gal | 0.000133681 ft³ | |
| 0.01 gal | 0.00133681 ft³ | |
| 0.1 gal | 0.0133681 ft³ | |
| 1 gal | 0.133681 ft³ | |
| 5 gal | 0.668404 ft³ | |
| 10 gal | 1.33681 ft³ | |
| 50 gal | 6.68404 ft³ | |
| 100 gal | 13.3681 ft³ | |
| 1000 gal | 133.681 ft³ |
Common us gallon values converted to cubic foot — factor: 1 gal = 0.1337 ft³
| US Gallon (gal) | Cubic Foot (ft³) | Context |
|---|---|---|
| 0.0078 gal | 0.001043 ft³ | Tablespoon |
| 0.031 gal | 0.004144 ft³ | Quarter cup |
| 0.0625 gal | 0.008355 ft³ | Cup |
| 0.125 gal | 0.01671 ft³ | Pint |
| 0.25 gal | 0.03342 ft³ | Quart |
| 0.5 gal | 0.06684 ft³ | Half gallon |
| 1 gal | 0.1337 ft³ | Gallon jug |
| 2 gal | 0.2674 ft³ | Two gallons |
| 5 gal | 0.6684 ft³ | Jerrycan |
| 10 gal | 1.337 ft³ | 10-gallon drum |
| 20 gal | 2.674 ft³ | 20-gallon tank |
| 42 gal | 5.615 ft³ | Oil barrel |
| 55 gal | 7.352 ft³ | Drum barrel |
| 100 gal | 13.37 ft³ | Large drum |
| 1,000 gal | 133.7 ft³ | Tank |
Converting us gallon to cubic foot comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using cubic foot, or a laboratory protocol may specify volumes in us gallon that need to be measured with equipment calibrated in cubic foot.
In everyday use, knowing that 5 gal = 0.6684 ft³ and 10 gal = 1.337 ft³ covers most common situations. For bulk calculations, 100 gal = 13.37 ft³ is a useful anchor. The reverse conversion — cubic foot back to us gallon — uses the factor 7.481, so 1 ft³ = 7.481 gal.
All conversions use the internationally recognized factor of exactly 1 gal = 0.1337 ft³. Calculations are performed in IEEE 754 double-precision floating point, giving accuracy to at least 8 significant figures — more than sufficient for any practical application.
Formula: Cubic Foot = US Gallon × 0.13368071
Multiply any us gallon value by 0.13368071 to get cubic foot. One us gallon equals 0.13368071 ft³.
Reverse: US Gallon = Cubic Foot × 7.4805107
US gallons ÷ 7.481 = cubic feet. Round to ÷ 7.5.
Seven and a half gallons is approximately one cubic foot.
ft³ × 7.481 = US gallons.
Prices fuel in USD per gallon and tracks daily sales volume in thousands of gallons.
Calculates pesticide and fertilizer application rates in gallons per acre.
Measures pool volume in gallons to calculate chlorine and pH chemical dosages.
Purchases engine oil, transmission fluid, and coolant in quart and gallon containers.
Estimates coverage (one US gallon covers about 350 sq ft) and quotes by the gallon.
Specifies water heater tank capacity (40, 50, 80 gallons) for residential systems.
The US liquid gallon is defined as exactly 231 cubic inches, or 3.785411784 liters. It traces its origins to the Queen Anne wine gallon of 1707, which American colonies adopted.
The US gallon differs from the UK Imperial gallon by about 16.5%. This matters for fuel economy: a US MPG figure is lower than the equivalent UK MPG for the same car.
Interesting fact: The United States, Liberia, and Myanmar are the only countries using the US gallon as a primary everyday volume unit.
The cubic foot is the Imperial and US customary volume unit equal to the space occupied by a cube with one-foot sides. It was formally standardized in the UK by the Weights and Measures Act of 1824.
Cubic feet appear in HVAC (airflow in CFM), natural gas billing in the US, and real-estate appraisals. One cubic foot equals exactly 1,728 cubic inches or approximately 28.317 liters.
Interesting fact: US natural gas meters read in CCF (hundreds of cubic feet) or MCF (thousands), making the cubic foot the invisible unit behind most American gas utility bills.