gallons per cubic ft of water

Guri Bee

2 min read

·

17-10-2024

1

0

Share

How Many Gallons are in a Cubic Foot of Water?

Ever wondered how many gallons of water fit into a cubic foot? This is a useful conversion to know, especially for tasks involving water storage, tank sizing, or even calculating the volume of a swimming pool.

The simple answer is 7.48 gallons are contained in one cubic foot of water.

Understanding the Conversion

This conversion stems from the following:

• 1 gallon = 231 cubic inches (this is a standard US gallon)
• 1 cubic foot = 1728 cubic inches (12 inches x 12 inches x 12 inches)

Therefore, we can calculate the gallons per cubic foot like this:

1 cubic foot / 1728 cubic inches * 231 cubic inches / 1 gallon = 7.48 gallons

Practical Examples

1. Pool Volume: Let's say you have a rectangular swimming pool that's 10 feet long, 5 feet wide, and 4 feet deep.

   • The volume of the pool is 10 ft x 5 ft x 4 ft = 200 cubic feet.
   • The pool holds 200 cubic feet x 7.48 gallons/cubic foot = 1496 gallons of water.

2. Water Tank Capacity: You have a cylindrical water tank with a diameter of 5 feet and a height of 8 feet.

   • The volume of the cylinder is π * (radius)^2 * height = π * (2.5 ft)^2 * 8 ft ≈ 157 cubic feet
   • The tank can hold 157 cubic feet x 7.48 gallons/cubic foot ≈ 1175 gallons of water.

Things to Keep in Mind:

• This conversion is for pure water at standard temperature and pressure. The density of water can vary slightly based on temperature and dissolved substances.
• While this conversion is useful for estimating, it's best to consult official capacity measurements from manufacturers for equipment like water tanks and pumps.

Conclusion

Knowing that one cubic foot of water holds 7.48 gallons provides a valuable tool for calculating water volume in various situations. This information can assist with tasks like:

• Estimating the amount of water needed for filling a pool or tank.
• Calculating the weight of water in a specific volume (1 gallon of water weighs approximately 8.34 pounds).
• Understanding the capacity of water storage systems.

Remember, accuracy is key when working with water calculations, so consider using the conversion as a starting point and double-check with manufacturer specifications when applicable.