How many US gallons are in one cubic foot?
One cubic foot contains about 7.48051948 US gallons.
Convert cubic foot (ft^3) to gallon (US) (gal (US)) instantly.
Formula
value × 7.48051948052
| Sample | Converted |
|---|---|
| 1 ft^3 | 7.480519 gal (US) |
| 5 ft^3 | 37.402597 gal (US) |
| 10 ft^3 | 74.805195 gal (US) |
| 100 ft^3 | 748.051948 gal (US) |
| 1,000 ft^3 | 7,480.519481 gal (US) |
Use this page to convert cubic feet into US gallons. It is useful when a space or container capacity listed in cubic feet needs to be understood as a US liquid volume, such as water, tanks, pools, bins, or reservoirs.
Cubic feet describe space, while US gallons describe liquid capacity.
One cubic foot holds a little under 7.5 US gallons.
This conversion is especially useful for water and tank calculations.
The result assumes the cubic-foot volume is usable fill volume.
Leave room for headspace, fittings, slope, foam, or safety margins when filling real containers.
This page uses US liquid gallons, not imperial gallons.
Cubic feet often come from dimensions: length times width times height.
US gallons are more useful when the same space will be filled with water or another liquid.
This conversion connects geometric capacity with practical liquid planning.
A calculated cubic-foot volume may not equal the safe fill amount.
Tanks may need headspace, and containers may have rounded edges, fittings, or uneven bottoms.
Use the gallon result as the volume conversion, then apply a margin for real use.
1 ft3 should be about 7.48052 US gal.
10 ft3 should be about 74.8052 US gal.
If 1 ft3 becomes 0.13368 gallons, the conversion has been reversed.
Definition: A cubic foot is the volume of a cube one foot long, one foot wide, and one foot high.
History/Origin: Cubic feet are used for US storage, construction, freight, room, tank, and appliance capacity measurements.
Current use: ft3 is used for refrigerators, freezers, shipping boxes, storage bins, rooms, tanks, soil, and general capacity estimates.
Definition: A US liquid gallon is a customary volume unit used for larger liquid quantities.
History/Origin: US gallons are used for water, fuel, beverages, irrigation, aquariums, appliances, and liquid storage.
Current use: gal_us is used for jugs, tanks, fuel, water, beverages, irrigation, aquariums, appliances, and larger liquid storage.
| cubic foot [ft^3] | gallon (US) [gal (US)] |
|---|---|
| 0.01 ft^3 | 0.074805 gal (US) |
| 0.1 ft^3 | 0.748052 gal (US) |
| 1 ft^3 | 7.480519 gal (US) |
| 2 ft^3 | 14.961039 gal (US) |
| 5 ft^3 | 37.402597 gal (US) |
| 10 ft^3 | 74.805195 gal (US) |
| 20 ft^3 | 149.61039 gal (US) |
| 50 ft^3 | 374.025974 gal (US) |
| 100 ft^3 | 748.051948 gal (US) |
1 ft^3 = 7.480519 gal (US)
1 gal (US) = 0.133681 ft^3
Formula: value × 7.48051948052
Example: 15 ft^3 = 112.207792 gal (US)
Precision note: Use 7.4805194805 US gallons per cubic foot. Round conservatively for real tanks or containers where overfilling matters.
One cubic foot contains about 7.48051948 US gallons.
One US gallon is about 0.133680556 cubic feet.
Yes for volume, but actual usable fill can be lower if the container has rounded corners, internal parts, or needs headspace.