About Cubic Feet to Gallons Conversion
What is a Cubic Foot?
A cubic foot (ft³) is a unit of volume in the imperial and US customary systems. It represents the volume of a cube with sides of exactly 1 foot each. Cubic feet are commonly used for measuring larger volumes like storage spaces, water tanks, and container capacities.
What is a Gallon?
A gallon (gal) is a unit of volume used primarily in the United States for measuring liquids. The US liquid gallon equals 231 cubic inches or approximately 3.785 liters. It's widely used for fuel, beverages, and other liquid measurements.
Why Convert Cubic Feet to Gallons?
Converting cubic feet to gallons is essential for:
- Water tank and pool capacity calculations
- Fuel storage and consumption estimates
- Plumbing and water system design
- Industrial liquid storage planning
- Shipping and logistics calculations
The Conversion Factor
The exact conversion factor is:
- 1 cubic foot = 7.48051948052 US gallons
- 1 US gallon = 0.133680556 cubic feet
- This relationship is based on exact mathematical definitions
Conversion Examples
Example 1: Convert 10 cubic feet to gallons
10 ft³ × 7.48052 = 74.8052 gallons
Example 2: Convert 25 cubic feet to gallons
25 ft³ × 7.48052 = 187.013 gallons
Example 3: Convert 5.5 cubic feet to gallons
5.5 ft³ × 7.48052 = 41.1429 gallons
Practical Applications
Common uses include:
- Swimming Pools: Converting pool dimensions to water volume
- Water Heaters: Understanding tank capacity
- Aquariums: Calculating water volume for fish tanks
- Irrigation: Planning water storage systems
Frequently Asked Questions
How many gallons are in 1 cubic foot?
1 cubic foot equals approximately 7.48052 US gallons.
Is this for US gallons or imperial gallons?
This converter uses US liquid gallons (231 cubic inches). Imperial gallons are larger at 277.42 cubic inches.
How do I calculate the volume of a rectangular tank?
Multiply length × width × height (all in feet) to get cubic feet, then use this converter to get gallons.
Can I convert gallons back to cubic feet?
Yes! Simply enter a value in the gallons field, and the corresponding cubic feet value will be calculated automatically.
What about cylindrical tanks?
For cylindrical tanks, calculate volume using π × radius² × height (all in feet) to get cubic feet, then convert to gallons.