5 gallons is approximately 0.6690 cubic feet.
Table of Contents
To convert gallons to cubic feet, you multiply the number of gallons by the conversion factor between these units. Since 1 gallon equals about 0.133681 cubic feet, multiplying by 5 gives you the total cubic feet.
Conversion Tool
Result in cubic:
Conversion Formula
The formula for converting gallons to cubic feet is:
Cubic feet = Gallons × 0.133681
This formula works because one gallon is equal to approximately 0.133681 cubic feet. By multiplying the gallons by this factor, you get the equivalent volume expressed in cubic feet.
For example, to convert 5 gallons to cubic feet:
- Start with the number of gallons: 5
- Multiply by the conversion factor: 5 × 0.133681
- Calculate the product: 0.668405
- Rounded to four decimals: 0.6690 cubic feet
Conversion Example
- Convert 10 gallons to cubic feet:
- Multiply 10 × 0.133681 = 1.33681 cubic feet
- The result is 1.3368 cubic feet rounded to four decimals
- Convert 3.5 gallons to cubic feet:
- 3.5 × 0.133681 = 0.4678835 cubic feet
- Rounded equals 0.4679 cubic feet
- Convert 0 gallons to cubic feet:
- 0 × 0.133681 = 0 cubic feet
- Because zero multiplied by anything is zero
- Convert -2 gallons to cubic feet:
- -2 × 0.133681 = -0.267362 cubic feet
- Negative values indicate volume taken away or removed
- Convert 15 gallons to cubic feet:
- 15 × 0.133681 = 2.005215 cubic feet
- Rounded to 2.0052 cubic feet
Conversion Chart
| Gallons | Cubic Feet |
|---|---|
| -20.0 | -2.6736 |
| -15.0 | -2.0052 |
| -10.0 | -1.3368 |
| -5.0 | -0.6684 |
| 0.0 | 0.0000 |
| 5.0 | 0.6690 |
| 10.0 | 1.3368 |
| 15.0 | 2.0052 |
| 20.0 | 2.6736 |
| 25.0 | 3.3420 |
| 30.0 | 4.0104 |
This chart shows gallons on the left column and their equivalent cubic feet on the right. You can find a value close to your gallon amount and see its cubic feet result without calculating.
Related Conversion Questions
- How many cubic feet are in 5 gallons of water?
- What is the volume in cubic feet for 5 gallons?
- Can 5 gallons be converted directly to cubic feet?
- What formula to convert 5 gallons into cubic measurements?
- Is 5 gallons more or less than 1 cubic foot?
- What is 5 gallons expressed in cubic feet with decimals?
- How do I calculate cubic feet from gallons if I have 5 gallons?
Conversion Definitions
Gallons: Gallons are a unit of volume primarily used in the United States and some other countries to measure liquids. One gallon equals 128 fluid ounces or approximately 3.785 liters. It is commonly used for measuring fuel, milk, and other liquids in everyday life.
Cubic: Cubic refers to volume measurement units that are expressed as the cube of a length unit, such as cubic feet or cubic meters. It represents the amount of space occupied by an object or substance in three dimensions, calculated by multiplying length × width × height.
Conversion FAQs
Why does converting gallons to cubic feet require a multiplication by 0.133681?
Because 1 gallon equals exactly 231 cubic inches, converting it to cubic feet needs dividing by 1728 (the number of cubic inches in a cubic foot). This results in the factor 0.133681 cubic feet per gallon used in multiplication.
Can I convert gallons to cubic meters instead of cubic feet?
Yes, gallons can be converted to cubic meters by using a different conversion factor. One gallon equals about 0.003785 cubic meters. The process is similar but requires multiplying gallons by this smaller factor for metric volume units.
Is the conversion factor the same for US and UK gallons?
No, the US gallon and UK (imperial) gallon differ. The US gallon is about 3.785 liters, while the UK gallon is roughly 4.546 liters. So, conversion to cubic feet varies depending on which gallon you use.
Does temperature affect gallons to cubic feet conversion?
Volume can change with temperature, but the conversion factor remains constant for standard measurements. If liquid expands or contracts due to temperature, its volume in gallons or cubic feet might slightly vary, but the conversion math stays the same.
How accurate is the gallons to cubic feet conversion factor?
The factor 0.133681 is precise for US liquid gallons converted to cubic feet. Minor discrepancies can occur due to rounding or measurement conditions, but for most practical uses, it is sufficiently accurate.