Convert US/imperial gallons to cubic feet, liters, quarts, and cubic yards. Includes CCF water billing output, water weight, container comparisons, and volume reference table.
One US gallon equals 0.133681 cubic feet, meaning it takes 7.48 gallons to fill one cubic foot. This conversion is critical for homeowners reading water bills (which use CCF — hundred cubic feet), pool owners sizing chemical treatments, aquarium hobbyists calculating tank volumes, and plumbing professionals estimating pipe capacity.
This converter handles both US and imperial gallons, working in either direction. Beyond cubic feet, it outputs liters, quarts, cubic yards, CCF (water billing units), and the weight of the equivalent volume of water in pounds. Preset buttons cover 10 common container sizes from a 1-gallon jug to a 20,000-gallon swimming pool.
The container scale visualization shows how your volume compares to everyday containers, and the collapsible reference table provides detailed data for 11 common water containers including gallons, cubic feet, liters, and water weight. This is your one-stop tool for translating between the gallon world of everyday use and the cubic-foot world of engineering and utility billing.
Water bills use cubic feet (CCF), but we think in gallons. Pool chemicals are dosed per gallon, but pool dimensions are in feet. This tool bridges the gap, showing both units plus CCF, liters, water weight, and container comparisons for clearer household planning, pool maintenance, and utility tracking decisions over time.
1 US gallon = 0.133681 ft³ 1 ft³ = 7.48052 US gallons 1 imperial gallon = 0.160544 ft³ 1 CCF = 100 ft³ = 748.05 US gallons
Result: 100 ft³ (1 CCF)
748 US gallons × 0.133681 ft³/gal = 100 ft³ = 1 CCF. This is the standard water utility billing unit, representing an average of 1-2 weeks of household water use.
Most US water utilities bill in CCF (centum cubic feet = 100 ft³ = 748 gallons). A typical household uses 5-8 CCF per month (3,740-5,984 gallons). By converting your gallon usage to CCF, you can predict your bill and set conservation goals. Some utilities bill in "units" where 1 unit = 1 CCF.
Swimming pool volume is critical for chemical dosing. Too little chlorine means algae; too much irritates skin. Volumes in gallons are needed for chemical labels, but pool dimensions are in feet. For a rectangular pool: Gallons = Length (ft) × Width (ft) × Average Depth (ft) × 7.48. For circular pools: Gallons = π × Radius² (ft) × Average Depth (ft) × 7.48.
The US gallon (3.785 liters, 231 in³) and imperial gallon (4.546 liters, 277.42 in³) differ by 20%. The US gallon is used in the United States; the imperial gallon is used in the UK and some Commonwealth countries. Always verify which gallon is being referenced, especially for automotive fuel economy (US MPG vs. UK MPG) and liquid product sizing.
7.48052 US gallons or 6.22884 imperial gallons.
0.133681 cubic feet (about 1/7.5 of a cubic foot).
748 US gallons. 1 CCF = 100 cubic feet.
55 × 0.1337 = 7.35 cubic feet.
Multiply length × width × depth (all in feet) to get cubic feet, then multiply by 7.48 to get gallons.
About 834.5 pounds (378.5 kg). Water weighs 8.345 lb per gallon.