Cubic Feet To Gallons
Convert cubic feet to US and UK gallons instantly with this free volume converter. Enter any volume in ft³ for accurate gallon equivalents using 1 ft³ = 7.48052 US gal. Ideal for construction and shipping.
About This Calculator
The Cubic Feet To Gallons Converter is a free online tool that instantly converts any volume from cubic feet (ft³) to both US gallons and UK (imperial) gallons. Whether you are working on a construction project, calculating aquarium or pool volume, determining shipping container capacity, or handling any task that requires volume conversion between these two imperial/US customary units, this converter delivers accurate results in seconds.
Cubic feet and gallons are both volume units used primarily in the United States and the United Kingdom. A cubic foot is defined as the volume of a cube with sides measuring one foot (12 inches) each. It is widely used in construction, shipping, HVAC, and natural gas billing. A gallon, on the other hand, has two different definitions: the US gallon (231 cubic inches ≈ 3.785 liters) and the UK imperial gallon (≈ 4.546 liters). Understanding the difference between these two gallon types is critical for accurate conversions in international contexts.
Formula
The conversion formulas are straightforward:
- US Gallons = Cubic Feet × 7.48052
- UK Gallons = Cubic Feet × 6.22884
For example, 1 cubic foot equals 7.48052 US gallons or 6.22884 UK gallons. To convert 5 cubic feet, multiply by the respective factor: 5 ft³ × 7.48052 = 37.4026 US gallons, or 5 ft³ × 6.22884 = 31.1442 UK gallons.
Regional Notes
United States: The US gallon is the standard for liquid volume measurement in the US. It is used for fuel, milk, water, and other beverages. The US gallon equals 128 US fluid ounces or about 3.785 liters. Cubic feet are commonly used for refrigerator capacity, shipping, and natural gas billing (CCF = hundred cubic feet).
United Kingdom: The UK imperial gallon (≈ 4.546 liters) is larger than the US gallon by approximately 20%. While the UK officially adopted the metric system, imperial gallons are still used for fuel economy (miles per gallon) and beer/cider measurements in pubs. Cubic feet are used in some construction and shipping contexts.
India: India uses the metric system (liters and cubic meters) officially, but cubic feet are still used in some real estate and construction contexts, especially for property area measurements and shipping containers. Gallons are less commonly used in daily life but appear in international trade and some industrial applications.
Frequently Asked Questions
How do I convert cubic feet to gallons?
To convert cubic feet to US gallons, multiply the volume in cubic feet by 7.48052. For UK (imperial) gallons, multiply by 6.22884 instead. For example, 1 cubic foot equals 7.48052 US gallons or 6.22884 UK gallons.
What is the difference between US gallons and UK gallons?
A US gallon equals 231 cubic inches (about 3.78541 liters), while a UK (imperial) gallon equals 4.54609 liters. This means a UK gallon is about 20% larger than a US gallon. One cubic foot converts to 7.48052 US gallons but only 6.22884 UK gallons.
How many gallons are in 10 cubic feet?
10 cubic feet equals 74.8052 US gallons or 62.2884 UK gallons. Simply multiply 10 by 7.48052 for US gallons or by 6.22884 for UK gallons.
Is 1 cubic foot the same as 1 gallon?
No, 1 cubic foot is not the same as 1 gallon. One cubic foot equals about 7.48 US gallons. A cubic foot is a much larger volume — it measures 12 inches by 12 inches by 12 inches, while a gallon is roughly the volume of a standard milk jug.
How many cubic feet are in a 5-gallon bucket?
A standard 5-gallon bucket holds approximately 0.668 cubic feet. This is calculated by dividing 5 US gallons by 7.48052 (gallons per cubic foot). The actual volume may vary slightly depending on the bucket's exact shape and dimensions.
What is a cubic foot used to measure?
Cubic feet measure volume in the US customary and imperial systems. Common uses include measuring refrigerator capacity, shipping container volume, aquarium tank size, natural gas consumption, construction materials like concrete and gravel, and HVAC air flow rates.
Is this cubic feet to gallons calculator free?
Yes, this calculator is completely free to use with no registration required. It supports both US and UK gallon conversions, works on all devices, and allows you to share results via URL.
Can I convert gallons back to cubic feet with this tool?
This calculator converts cubic feet to gallons. To convert gallons to cubic feet, divide the number of gallons by 7.48052 for US gallons or by 6.22884 for UK gallons. For example, 10 US gallons divided by 7.48052 equals about 1.336 cubic feet.