Gallons to Cubic Feet Converter
Convert U.S. liquid gallons to cubic feet instantly. Enter a value to get the result, then use the formula, conversion table, and worked examples for quick reference.
Gallons to cubic feet converter
Quick Reference
Gallons to Cubic Feet Conversion Table
Here are some common gallons to cubic feet conversions. This converter uses the U.S. liquid gallon, where 1 gallon = 0.1336805555556 cubic feet.
| Gallons (gal) | Calculation | Cubic Feet (ft³) |
|---|---|---|
| 1 gal | 1 × 0.1336805555556 | 0.133681 ft³ |
| 5 gal | 5 × 0.1336805555556 | 0.668403 ft³ |
| 7.480519 gal | 7.48051948052 × 0.1336805555556 | 1 ft³ |
| 10 gal | 10 × 0.1336805555556 | 1.336806 ft³ |
| 25 gal | 25 × 0.1336805555556 | 3.342014 ft³ |
| 50 gal | 50 × 0.1336805555556 | 6.684028 ft³ |
| 100 gal | 100 × 0.1336805555556 | 13.368056 ft³ |
| 250 gal | 250 × 0.1336805555556 | 33.420139 ft³ |
| 500 gal | 500 × 0.1336805555556 | 66.840278 ft³ |
| 750 gal | 750 × 0.1336805555556 | 100.260417 ft³ |
| 1000 gal | 1000 × 0.1336805555556 | 133.680556 ft³ |
| 1500 gal | 1500 × 0.1336805555556 | 200.520833 ft³ |
| 2000 gal | 2000 × 0.1336805555556 | 267.361111 ft³ |
Step-by-Step
How to Convert Gallons to Cubic Feet
To convert gallons to cubic feet, multiply the number of gallons by 0.1336805555556. This gives you the equivalent volume in cubic feet.
The same formula applies to any U.S. liquid gallon value. Multiply the number of gallons by 0.1336805555556 to get cubic feet.
Gallons to Cubic Feet Formula
A gallon is a common liquid volume unit, while a cubic foot is a three-dimensional volume unit used for larger spaces, tanks, containers, storage, and construction measurements.
For this page, the exact relationship is 1 gallon = 0.1336805555556 cubic feet.
To convert cubic feet back to gallons, divide cubic feet by 0.1336805555556, or multiply by 7.48051948052.
How to Turn Gallons Into Cubic Feet
Start with the gallon value
Write down the number of gallons you want to convert. For example, you may want to calculate 100 gallons to cubic feet.
Multiply by 0.1336805555556
Multiply the gallon value by 0.1336805555556. Example: 100 × 0.1336805555556 = 13.36805555556 cubic feet.
Write the answer in cubic feet
Your result is the equivalent volume in cubic feet. In this case, 100 gal = 13.368056 ft³.
Gallons vs Cubic Feet
How Many Cubic Feet Are in a Gallon?
One of the most common questions is how many cubic feet are in a gallon. Using the U.S. liquid gallon standard, the answer is 1 gallon = 0.1336805555556 cubic feet.
That means a gallon to cubic feet conversion is simple: multiply the number of gallons by 0.1336805555556. For example, 1 gallon to cubic feet equals 0.133681 ft³, 10 gallons to cubic feet equals 1.336806 ft³, and 1000 gallons to cubic feet equals 133.680556 ft³.
You may also see this conversion written as gal to ft³. The meaning is the same: converting U.S. gallons into cubic feet.
A common reference point is that 1 gallon equals 0.1336805555556 cubic feet.
Gallon size can vary by region, which is why this converter clearly uses the U.S. liquid gallon.
Worked Examples
Sample Gallon to Cubic Foot Calculations
These examples show how to calculate some of the most common gallons to cubic feet conversions people search for.
1 gallon to cubic feet
1 × 0.1336805555556 = 0.133681 ft³. So, 1 gallon to cubic feet equals about 0.133681 cubic feet.
5 gallon to cubic feet
5 × 0.1336805555556 = 0.668403 ft³. So, 5 gallon to cubic feet equals about 0.668403 cubic feet.
10 gallons to cubic feet
10 × 0.1336805555556 = 1.336806 ft³. So, 10 gallons to cubic feet equals about 1.336806 cubic feet.
20 gallons to cubic feet
20 × 0.1336805555556 = 2.673611 ft³. So, 20 gallons to cubic feet equals about 2.673611 cubic feet.
25 gallons to cubic feet
25 × 0.1336805555556 = 3.342014 ft³. So, 25 gallons to cubic feet equals about 3.342014 cubic feet.
50 gallons to cubic feet
50 × 0.1336805555556 = 6.684028 ft³. So, 50 gallons to cubic feet equals about 6.684028 cubic feet.
55 gallons to cubic feet
55 × 0.1336805555556 = 7.352431 ft³. So, 55 gallons to cubic feet equals about 7.352431 cubic feet.
100 gallons to cubic feet
100 × 0.1336805555556 = 13.368056 ft³. So, 100 gallons to cubic feet equals about 13.368056 cubic feet.
1000 gallons to cubic feet
1000 × 0.1336805555556 = 133.680556 ft³. So, 1000 gallons to cubic feet equals about 133.680556 cubic feet.
FAQ
Frequently Asked Questions
Common questions about converting gallons to cubic feet.
Special Cases
Special Notes for Water, Buckets, and Dry Gallons
Some users also search for gallons of water to cubic feet, water gallons to cubic feet, 5 gallon bucket to cubic feet, or dry gallons to cubic feet. For water, the standard gallons-to-cubic-feet formula applies directly.
A dry gallon can refer to a different measurement system, so if you are comparing dry gallons to cubic feet, make sure you are using the correct gallon definition. This page is based only on the U.S. liquid gallon.