15 gallons is equal to approximately 2.0069 cubic feet.
Table of Contents
This conversion is done by multiplying the number of gallons by the conversion factor from gallons to cubic feet. Since one gallon is equal to 0.133681 cubic feet, multiplying 15 by this factor gives the result in cubic feet.
Conversion Tool
Result in cubic:
Conversion Formula
To convert gallons to cubic feet, multiply the volume in gallons by 0.133681. This factor represents how many cubic feet are contained in one gallon. Because gallons measure volume in liquid form, and cubic feet measure volume in three-dimensional space, the conversion factor bridges these units.
Formula:
cubic feet = gallons × 0.133681
Example calculation for 15 gallons:
- Start with 15 gallons
- Multiply by 0.133681 to convert: 15 × 0.133681
- Calculate the product: 2.005215
- Rounded result: 2.0069 cubic feet
Conversion Example
Let’s convert 25 gallons to cubic feet step-by-step:
- Take the value 25 gallons
- Multiply by the conversion factor 0.133681: 25 × 0.133681
- Calculate the product: 3.342025 cubic feet
- Result: approximately 3.3420 cubic feet
Another example, 7 gallons:
- 7 × 0.133681 = 0.935767 cubic feet
- Rounded: 0.9358 cubic feet
And one more, 50 gallons:
- 50 × 0.133681 = 6.68405 cubic feet
- Rounded: 6.6841 cubic feet
Conversion Chart
| Gallons | Cubic Feet |
|---|---|
| -10.0 | -1.3368 |
| -5.0 | -0.6684 |
| 0.0 | 0.0000 |
| 5.0 | 0.6684 |
| 10.0 | 1.3368 |
| 15.0 | 2.0052 |
| 20.0 | 2.6736 |
| 25.0 | 3.3420 |
| 30.0 | 4.0104 |
| 35.0 | 4.6788 |
| 40.0 | 5.3472 |
The chart shows gallons values from -10.0 to 40.0 and their equivalent cubic feet. You can use it to quickly find the cubic measurement for a given gallon amount without doing calculations. Negative values may represent volume removed or below a reference point.
Related Conversion Questions
- How many cubic feet are in 15 gallons of water?
- What is 15 gallons converted to cubic meters?
- Is 15 gallons more or less than 2 cubic feet?
- How to convert 15 gallons to cubic inches and cubic feet?
- Can 15 gallons fill a space of 2 cubic feet?
- What volume in cubic feet does 15 gallons represent?
- How to calculate cubic feet from 15 gallons in a tank?
Conversion Definitions
Gallon: A gallon is a volume unit commonly used in the United States and some other countries, primarily to measure liquids like water and fuel. One US gallon equals 128 fluid ounces or approximately 3.785 liters. Gallons are not a metric unit but often used in daily commerce and industry.
Cubic: Cubic measures refer to units of volume based on the cube of a length unit. For example, cubic feet measure the volume of a cube with edges one foot long. Cubic units express three-dimensional space and are used to describe capacities of containers, rooms, or materials.
Conversion FAQs
Why does the conversion from gallons to cubic feet use a factor of 0.133681?
This factor comes from the definition of a gallon as 231 cubic inches and a cubic foot as 1728 cubic inches. Dividing 231 by 1728 gives approximately 0.133681, representing how many cubic feet one gallon contains.
Can I use the conversion factor for gallons of any liquid?
Yes, because gallons and cubic feet are volume units, the conversion factor applies regardless of liquid type. However, density or temperature changes don’t affect the volume-to-volume conversion directly.
Is the conversion factor the same for UK gallons?
No, the UK gallon is larger than the US gallon (about 4.546 liters). The conversion factor for UK gallons to cubic feet is different, approximately 0.160544.
How accurate is the result when rounded to four decimal places?
Rounding to four decimal places provides reasonable accuracy for most practical uses. For precise scientific calculations, more decimal places or exact fractions may be required.
Can this conversion help in calculating tank sizes?
Yes, converting gallons to cubic feet helps in designing or measuring tanks by expressing volume in cubic units, which are easier to relate to physical dimensions such as length, width, and height.