Cubic Foot to Gallon (US) Converter
Convert Cubic Foot (ft³) to Gallon (US) (gal) instantly. 1 ft³ = 7.480519 gal.
Volume Converter
40 units available
1 ft³ = 7.480519 gal
Formula:
gal = ft³ × 7.4805194805With your value: 1 ft³ = 7.48051948 gal
How big is that?
Everyday references on a logarithmic scale, all expressed in cubic foot so you can sanity-check the result.
Other Cubic Foot to Gallon (US) conversions
Cubic Foot to Gallon (US) Conversion Table
| Cubic Foot (ft³) | Gallon (US) (gal) |
|---|---|
| 0.5 | 3.74026 |
| 1 | 7.480519 |
| 2 | 14.961039 |
| 5 | 37.402597 |
| 10 | 74.805195 |
| 15 | 112.207792 |
| 20 | 149.61039 |
| 25 | 187.012987 |
| 50 | 374.025974 |
| 100 | 748.051948 |
| 250 | 1,870.12987 |
| 500 | 3,740.25974 |
| 1000 | 7,480.519481 |
Gallon (US) to Cubic Foot Conversion Table
| Gallon (US) (gal) | Cubic Foot (ft³) |
|---|---|
| 0.5 | 0.06684 |
| 1 | 0.133681 |
| 2 | 0.267361 |
| 5 | 0.668403 |
| 10 | 1.336806 |
| 15 | 2.005208 |
| 20 | 2.673611 |
| 25 | 3.342014 |
| 50 | 6.684028 |
| 100 | 13.368056 |
| 250 | 33.420139 |
| 500 | 66.840278 |
| 1000 | 133.680556 |
Where these values come from
Every factor on this page is traced to the document that defines it. See the full provenance dataset or our methodology.
Cubic Foot (ft³)
Volume
Derived from the cubic metre. The litre is exactly 10⁻³ m³; US and imperial capacity units are exact multiples fixed by statute.
Source: NIST Special Publication 811, Guide for the Use of the International System of Units
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
Gallon (US) (gal)
Volume
The US liquid gallon is exactly 231 cubic inches = 3.785 411 784 L.
National Institute of Standards and Technology (US) · Reviewed 2026-07-01
How to Convert Cubic Foot to Gallon (US)
To convert from Cubic Foot (ft³) to Gallon (US) (gal), multiply the value by 7.4805194805.
Formula: gal = ft³ × 7.4805194805
Reverse: ft³ = gal × 0.1336805556
Step-by-Step Example
- Start with your value in Cubic Foot. For example: 5 ft³
- Multiply by the conversion factor: 5 x 7.4805194805
- The result is: 37.402597 gal
About Cubic Foot
The cubic foot equals about 28.3168 litres and is the standard unit for appliance capacity and gas metering in the US.
Common uses: refrigerator capacity, natural gas billing, shipping volume.
About Gallon (US)
The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.
Fun Fact: The US gallon is about 20% smaller than the imperial (UK) gallon.
Common uses: fuel (US), beverages, swimming pools.
Frequently Asked Questions
How many Gallon (US) are in 1 Cubic Foot?
There are exactly 7.4805194805 Gallon (US) in 1 Cubic Foot. This means the conversion factor from Cubic Foot to Gallon (US) is 7.4805194805.
What is the formula to convert Cubic Foot to Gallon (US)?
The formula to convert Cubic Foot to Gallon (US) is: gal = ft³ × 7.4805194805. For example, to convert 10 Cubic Foot to Gallon (US), you would multiply 10 by 7.4805194805.
What is a Cubic Foot?
The cubic foot equals about 28.3168 litres and is the standard unit for appliance capacity and gas metering in the US.
What is a Gallon (US)?
The US gallon equals approximately 3.785 liters and is the standard unit for fuel and large liquid volumes in the United States.
What are the common uses of Cubic Foot?
The Cubic Foot is commonly used in refrigerator capacity, natural gas billing, shipping volume.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). Cubic Foot to Gallon (US) converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/cubic_foot-to-gallon_us