Gallon (US) to Cubic Foot Converter
Convert Gallon (US) (gal) to Cubic Foot (ft³) instantly. 1 gal = 0.133681 ft³.
Volume Converter
40 units available
1 gal = 0.133681 ft³
Formula:
ft³ = gal × 0.1336805556With your value: 1 gal = 0.13368056 ft³
How big is that?
Everyday references on a logarithmic scale, all expressed in gallon (us) so you can sanity-check the result.
Other Gallon (US) to Cubic Foot conversions
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 |
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 |
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.
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
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
How to Convert Gallon (US) to Cubic Foot
To convert from Gallon (US) (gal) to Cubic Foot (ft³), multiply the value by 0.1336805556.
Formula: ft³ = gal × 0.1336805556
Reverse: gal = ft³ × 7.4805194805
Step-by-Step Example
- Start with your value in Gallon (US). For example: 5 gal
- Multiply by the conversion factor: 5 x 0.1336805556
- The result is: 0.668403 ft³
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.
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.
Frequently Asked Questions
How many Cubic Foot are in 1 Gallon (US)?
There are exactly 0.1336805556 Cubic Foot in 1 Gallon (US). This means the conversion factor from Gallon (US) to Cubic Foot is 0.1336805556.
What is the formula to convert Gallon (US) to Cubic Foot?
The formula to convert Gallon (US) to Cubic Foot is: ft³ = gal × 0.1336805556. For example, to convert 10 Gallon (US) to Cubic Foot, you would multiply 10 by 0.1336805556.
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 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 are the common uses of Gallon (US)?
The Gallon (US) is commonly used in fuel (US), beverages, swimming pools.
Related Volume Conversions
Cite this page
UnitConvertLab. (2026). Gallon (US) to Cubic Foot converter. UnitConvertLab. Retrieved from https://unitconvertlab.com/convert/gallon_us-to-cubic_foot