Gallons to Cubic Feet Converter
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.
Cubic Feet to Gallons Converter
Convert cubic feet to US/imperial gallons, liters, quarts, pints, and fluid ounces. Includes water container comparisons, utility billing CCF, and reference table.
Quick Presets (Cubic Feet)
US Gallons⧉
74.81
1 ft³ = 7.48 US gal
Imperial Gallons⧉
62.29
1 ft³ = 6.23 imp gal
Cubic Feet⧉
10.00
Base volume
Liters⧉
283.17
1 ft³ = 28.32 L
US Quarts⧉
299.22
4 quarts per gallon
US Pints⧉
598.44
8 pints per gallon
US Fluid Ounces⧉
9,575.07
128 fl oz per gallon
CCF (billing)⧉
0.10
1 CCF = 100 ft³
Container Comparison
Bathtub
1.89×
Water heater (40 gal)
1.87×
Water heater (50 gal)
1.5×
Hot tub (small)
0.3×
Hot tub (large)
0.15×
Above-ground pool (12 ft round)
0.03×
In-ground pool (avg)
0×
Water tower (small)
0×
Planning notes, formulas, and examples
About the Cubic Feet to Gallons Converter
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.
When This Page Helps
Pool, tank, and water heater capacities are often given in gallons, while plumbing and construction measurements use cubic feet. Keeping both systems alongside CCF helps homeowners and facility teams reconcile equipment specs, water bills, and storage volumes without carrying several separate conversion factors.
How to Use the Inputs
- Choose cubic feet → gallons or gallons → cubic feet.
- Select US or imperial gallons.
- Enter the volume or tap a preset.
- Adjust decimal precision.
- Read all eight output cards covering gallons, liters, quarts, pints, and CCF.
- Compare your volume to common containers using the visual bars.
- Expand the reference table for detailed container volumes.
Formula used
1 ft³ = 7.48052 US gallons = 6.22884 imperial gallons
US Gallons = ft³ × 7.48052
Imperial Gallons = ft³ × 6.22884Example Calculation
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.
Tips & Best Practices
- 1 CCF on your water bill = 100 ft³ = 748 gallons. Average US household uses 5–8 CCF/month.
- US gallon ≠ imperial gallon. US = 3.785 L, imperial = 4.546 L. Always specify which.
- Pool volume in gallons = length × width × avg depth (in feet) × 7.48.
- A standard 55-gallon drum = 7.35 ft³.
- To estimate a cylindrical tank: V (ft³) = π × r² × h, then multiply by 7.48 for gallons.
- Water weighs 8.34 lbs per US gallon, or 62.4 lbs per cubic foot.
Cubic Feet and Gallons in Water Management
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.
Pool and Tank Sizing
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.
US vs. Imperial Gallons
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.
Sources & Methodology
Last updated:
Frequently Asked Questions
7.48052 US gallons or 6.22884 imperial (UK) gallons. Use the imperial figure for UK-based tank and utility contexts.
100 ÷ 7.48052 = 13.37 cubic feet. That inverse conversion is useful when a tank or bill starts in gallons.
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.
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