Convert cubic feet to US/imperial gallons, liters, quarts, pints, and fluid ounces. Includes water container comparisons, utility billing CCF, and reference table.
One cubic foot holds exactly 7.48052 US gallons or 6.22884 imperial gallons. This conversion is essential for pool owners calculating water volume, homeowners reading water utility bills (which use CCF — hundred cubic feet), aquarium hobbyists sizing tanks, and anyone working with water storage or plumbing.
This converter handles both US and imperial gallons and extends the output to liters, quarts, pints, fluid ounces, and the CCF billing unit. Preset buttons cover common volumes from a single cubic foot up to 1,000 ft³, and a visual comparison chart shows how your volume relates to bathtubs, hot tubs, pools, and water towers.
The distinction between US and imperial gallons matters: 1 US gallon = 3.785 liters while 1 imperial gallon = 4.546 liters. Always check which system your equipment or utility uses before applying the conversion. This avoids costly dosing, sizing, or billing mistakes in real-world projects and keeps operational planning aligned.
Pool, tank, and water heater capacities are often given in gallons, while plumbing and construction measurements use cubic feet. This tool converts between both systems instantly and includes CCF — the billing unit on most US water statements that is otherwise confusing for homeowners and facility managers handling utility reviews.
1 ft³ = 7.48052 US gallons = 6.22884 imperial gallons US Gallons = ft³ × 7.48052 Imperial Gallons = ft³ × 6.22884
Result: 748 US gallons
100 ft³ × 7.48052 = 748 US gallons. This is 1 CCF, the standard water utility billing unit, equal to 2,832 liters.
Water utilities across the US measure consumption in CCF (hundred cubic feet). A typical household uses 5–8 CCF per month, equivalent to 3,740–5,984 gallons. Understanding the cubic-foot-to-gallon conversion helps you interpret your water bill and compare usage with conservation benchmarks.
Swimming pool volumes are almost always discussed in gallons, but the dimensions are measured in feet. A rectangular pool that is 16 × 32 ft with an average depth of 5 ft contains 16 × 32 × 5 = 2,560 ft³ = 19,149 gallons. Knowing this helps with chemical dosing, pump sizing, and heater selection.
The US gallon (3.785 L) is used in the United States, while the imperial gallon (4.546 L) is still found in the UK, Canada (for some purposes), and former British colonies. Recipes, fuel economy figures, and container sizes differ between the two systems, so always verify which gallon is being referenced.
7.48052 US gallons or 6.22884 imperial (UK) gallons.
100 ÷ 7.48052 = 13.37 cubic feet.
CCF = Centum Cubic Feet = 100 cubic feet = 748 US gallons. Most US water utilities bill in CCF.
Multiply length × width × average depth (all in feet) to get cubic feet, then multiply by 7.48.
A US gallon is 231 cubic inches (3.785 L). An imperial gallon is 277.42 in³ (4.546 L). The imperial gallon is about 20% larger.
About 62.4 pounds (28.3 kg). That is 7.48 gallons at 8.34 lbs each.