Cubic Feet to Gallons Converter

What is the Cubic Feet to Gallons Converter?

Our cubic feet to gallons converter is a free online tool that instantly converts volume measurements between cubic feet (ft³) and gallons (gal). It supports both US gallons and UK (imperial) gallons, making it perfect for international use. Whether you are calculating water tank capacity, fuel volumes, or pool sizes, this converter provides accurate bidirectional results in real time.

Cubic feet and gallons are both common volume units in the imperial and US customary systems. However, there is an important distinction between US gallons and UK gallons, which have different volumes. Our converter handles both types, ensuring you get the right conversion every time.

How to Use the Converter

1. Enter a value in the Cubic Feet (ft³) field to see the equivalent in gallons.
2. Alternatively, enter a value in the Gallons field for the reverse conversion.
3. Select between US Gallons and UK Gallons using the dropdown menu.
4. The conversion updates in real time as you type or change the gallon type.
5. Use the quick example buttons for common reference values.

Conversion Formula

The conversion depends on which gallon type you are using:

1 ft³ = 7.48052 US gallons

1 ft³ = 6.22884 UK gallons

To convert cubic feet to US gallons, multiply by 7.48052. To convert to UK gallons, multiply by 6.22884. For the reverse, divide the number of gallons by the appropriate factor.

Common Conversions

• 1 ft³ = 7.48 US gallons
• 1 ft³ = 6.23 UK gallons
• 10 ft³ = 74.81 US gallons
• 10 ft³ = 62.29 UK gallons
• 100 ft³ = 748.05 US gallons
• 100 ft³ = 622.88 UK gallons

US Gallons vs UK Gallons

The US gallon and UK gallon are different units:

• US Gallon: Defined as 231 cubic inches or approximately 3.785 liters. Used in the United States and some Latin American countries.
• UK Gallon: Defined as 4.54609 liters or approximately 277.42 cubic inches. Used in the United Kingdom, Canada, and some Caribbean nations.

The UK gallon is about 20% larger than the US gallon. This difference is significant in applications like fuel pricing, shipping, and industrial processes, so it is important to use the correct gallon type.

Practical Applications

• Water Storage: Calculating tank capacity for residential, commercial, or agricultural water storage.
• Swimming Pools: Determining the volume of water needed to fill a pool.
• Fuel: Converting fuel volumes for vehicles, generators, and heating systems.
• Aquariums: Figuring out how many gallons of water your fish tank holds.
• Shipping: Converting cargo liquid volumes for international shipping documentation.

Related Tools

For other volume conversions, check out our Cubic Feet Calculator and Cubic Feet to Cubic Meters Converter.