Cubic Feet to US Gallons Converter
Convert cubic feet (ft³) to US liquid gallons (gal) instantly using the exact formula gal = ft³ × 7.48051948052. Includes a calculator, conversion table, worked examples, and FAQs.
Cubic feet to US gallons converter
This converter uses US liquid gallons, not imperial gallons.
Quick Reference
Cubic Feet to US Gallons Conversion Table
Common cubic foot to US gallon conversions at a glance. This page uses the US liquid gallon, where 1 cubic foot = 7.48051948052 gallons.
| Cubic Feet (ft³) | Calculation | US Gallons (gal) |
|---|---|---|
| 0.5 ft³ | 0.5 × 7.48051948052 | 3.740260 gal |
| 1 ft³ | 1 × 7.48051948052 | 7.480519 gal |
| 2 ft³ | 2 × 7.48051948052 | 14.961039 gal |
| 5 ft³ | 5 × 7.48051948052 | 37.402597 gal |
| 10 ft³ | 10 × 7.48051948052 | 74.805195 gal |
| 20 ft³ | 20 × 7.48051948052 | 149.610390 gal |
| 50 ft³ | 50 × 7.48051948052 | 374.025974 gal |
| 100 ft³ | 100 × 7.48051948052 | 748.051948 gal |
| 250 ft³ | 250 × 7.48051948052 | 1870.129870 gal |
| 500 ft³ | 500 × 7.48051948052 | 3740.259740 gal |
| 1000 ft³ | 1000 × 7.48051948052 | 7480.519481 gal |
Step-by-Step
How to Convert Cubic Feet to US Gallons
To convert cubic feet to US gallons, multiply the cubic foot value by 7.48051948052. This gives you the equivalent volume in US liquid gallons.
The Formula
A cubic foot (ft³) and a gallon are both units of volume, but cubic feet are often used for tanks, storage spaces, aquariums, pools, and larger containers. Gallons are more common when measuring liquid capacity.
On this page, the exact relationship is 1 cubic foot = 7.48051948052 US liquid gallons.
To convert gallons back to cubic feet, divide gallons by 7.48051948052, or use our Gallons to Cubic Feet Converter.
How to Convert ft³ to gal
Write down the cubic foot value
Start with the number of cubic feet you want to convert. For example, 10 ft³.
Multiply by 7.48051948052
10 ft³ × 7.48051948052 = 74.8051948052 gallons.
Write the result in gallons
Your answer is the equivalent volume in US gallons. In this case, 10 ft³ = 74.805195 gal.
Cubic Feet vs Gallons
How Many Gallons Are in a Cubic Foot?
Using the US liquid gallon standard, 1 cubic foot = 7.48051948052 gallons.
That means converting cubic feet to gallons is simple: multiply the number of cubic feet by 7.48051948052. For example, 2 cubic feet equals 14.961039 gallons, and 100 cubic feet equals 748.051948 gallons.
This conversion is useful for tanks, aquariums, pools, water systems, storage containers, and other situations where volume may be measured in cubic feet but discussed in gallons.
This page uses US liquid gallons. Imperial gallons are different, so the conversion factor would not be the same.
Worked Examples
Sample Cubic Feet to Gallon Calculations
Here are some of the most common cubic foot to US gallon conversions.
1 ft³ to gal
1 × 7.48051948052 = 7.480519 gal. One cubic foot equals about 7.48 US gallons.
2 ft³ to gal
2 × 7.48051948052 = 14.961039 gal. Two cubic feet equals about 14.96 US gallons.
5 ft³ to gal
5 × 7.48051948052 = 37.402597 gal. Five cubic feet equals about 37.40 US gallons.
10 ft³ to gal
10 × 7.48051948052 = 74.805195 gal. Ten cubic feet equals about 74.81 US gallons.
20 ft³ to gal
20 × 7.48051948052 = 149.610390 gal. Twenty cubic feet equals about 149.61 US gallons.
50 ft³ to gal
50 × 7.48051948052 = 374.025974 gal. Fifty cubic feet equals about 374.03 US gallons.
100 ft³ to gal
100 × 7.48051948052 = 748.051948 gal. One hundred cubic feet equals about 748.05 US gallons.
FAQ
Frequently Asked Questions
Common questions about converting cubic feet to US gallons.