US gallons to cubic feet
Type a value in US gallons to see it in cubic feet straight away, or type in the second box to convert back.
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How to use it
- Type the value in the US gallons box.
- Read the result in cubic feet as you type, and pick the precision you need.
- Swap the direction to convert back, or copy the result.
How it is calculated
ft³ = gal (US) × 0.1336805556
Multiply the value in US gallons by 0.1336805556 to get cubic feet.
Example
To convert 25 gal (US) to cubic feet: 25 × 0.1336805556 = 3.34201 ft³.
Conversion table
| US gallons (gal (US)) | Cubic feet (ft³) |
|---|---|
| 1 | 0.133681 |
| 2 | 0.267361 |
| 3 | 0.401042 |
| 5 | 0.668403 |
| 10 | 1.33681 |
| 20 | 2.67361 |
| 25 | 3.34201 |
| 50 | 6.68403 |
| 100 | 13.3681 |
| 250 | 33.4201 |
| 500 | 66.8403 |
| 1,000 | 133.681 |
About the units
- US gallon
- The US liquid gallon is defined as 231 cubic inches, exactly 3.785411784 liters.
- Cubic foot
- The cubic foot equals 1728 cubic inches, exactly 28.316846592 liters, and is used for fridge capacity and freight.
Limits and caveats
- Results are rounded for display and computed with the browser's floating point precision (about 15 significant digits).
- Both unit factors are exact by their official definitions.
Questions about this tool
How many cubic feet are in one US gallon?
1 gal (US) = 0.133681 ft³ exactly.
How do I convert US gallons to cubic feet?
Use ft³ = gal (US) × 0.1336805556. For example, 25 gal (US) = 3.34201 ft³.
How many US gallons are in one cubic foot?
1 ft³ = 7.48052 gal (US).
What is the difference between a US gallon and an imperial gallon?
A US gallon is 3.785411784 liters and the imperial gallon used in the UK is 4.54609 liters, about 20% larger. Check where a figure comes from before converting, since US sources mean the US gallon.
How many milliliters are in a cup?
The US customary cup used in recipes is 236.5882365 mL and the metric cup is 250 mL. US nutrition labels round the cup to 240 mL, so the figure differs slightly between sources.