Convert volume units — liters, gallons, cups, milliliters, cubic meters, barrels and more.
| Unit | Name | Value |
|---|---|---|
| 0.001 ft³ | 0.00748051 gal | |
| 0.01 ft³ | 0.0748051 gal | |
| 0.1 ft³ | 0.748051 gal | |
| 1 ft³ | 7.48051 gal | |
| 5 ft³ | 37.4026 gal | |
| 10 ft³ | 74.8051 gal | |
| 50 ft³ | 374.026 gal | |
| 100 ft³ | 748.051 gal | |
| 1000 ft³ | 7480.51 gal |
Common cubic foot values converted to us gallon — factor: 1 ft³ = 7.481 gal
| Cubic Foot (ft³) | US Gallon (gal) | Context |
|---|---|---|
| 0.01 ft³ | 0.07481 gal | — |
| 0.1 ft³ | 0.7481 gal | — |
| 0.5 ft³ | 3.74 gal | — |
| 1 ft³ | 7.481 gal | — |
| 2 ft³ | 14.96 gal | — |
| 5 ft³ | 37.4 gal | — |
| 10 ft³ | 74.81 gal | — |
| 27 ft³ | 202 gal | — |
| 50 ft³ | 374 gal | — |
| 100 ft³ | 748.1 gal | — |
| 200 ft³ | 1,496 gal | — |
| 500 ft³ | 3,740 gal | — |
| 1,000 ft³ | 7,481 gal | — |
| 5,000 ft³ | 3.74e+04 gal | — |
| 1e+04 ft³ | 7.481e+04 gal | — |
Converting cubic foot to us gallon comes up frequently in cooking, chemistry, medicine, and engineering. A recipe written in metric units may need to be adapted for a kitchen using us gallon, or a laboratory protocol may specify volumes in cubic foot that need to be measured with equipment calibrated in us gallon.
In everyday use, knowing that 5 ft³ = 37.4 gal and 10 ft³ = 74.81 gal covers most common situations. For bulk calculations, 100 ft³ = 748.1 gal is a useful anchor. The reverse conversion — us gallon back to cubic foot — uses the factor 0.1337, so 1 gal = 0.1337 ft³.
All conversions use the internationally recognized factor of exactly 1 ft³ = 7.481 gal. 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: US Gallon = Cubic Foot × 7.4805107
Multiply any cubic foot value by 7.4805107 to get us gallon. One cubic foot equals 7.4805107 gal.
Reverse: Cubic Foot = US Gallon × 0.13368071
Cubic feet × 7.481 = US gallons. Round to × 7.5 for quick estimates.
One cubic foot holds about 7.5 US gallons — good for pool calculations.
US gallons ÷ 7.481 = ft³.
Sizes ductwork and fan capacities using CFM (cubic feet per minute).
Records natural gas consumption displayed in cubic feet on residential meters.
Estimates shipment volume in cubic feet to quote truck size and cargo weight.
Orders ready-mix in cubic yards (27 ft³) and converts smaller pours to cubic feet.
Measures timber volume in cubic feet for lumber yield and valuation.
Calculates pool volume in cubic feet to size filtration systems.
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.
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.