Measuring pool water typically refers to calculating its volume, which is essential for proper chemical dosing, filling, or understanding your pool's capacity.
Calculating Pool Water Volume
To measure the volume of pool water, you calculate the pool's cubic volume and then convert that to gallons.
According to SwimmingPool.com, the standard method for calculating pool water volume involves multiplying the pool's dimensions (length, width, and depth) and then converting the resulting cubic feet measurement into gallons.
The Volume Formula
The core formula used to determine the volume in gallons is:
Length x Width x Depth x 7.5 = Volume (in gallons)
This formula works because, as the reference states, there are 7.5 gallons in each cubic foot. Therefore, once you calculate the cubic feet of the pool by multiplying length, width, and depth, you multiply that result by 7.5 to get the total volume in gallons.
Here's a breakdown:
- Calculate Cubic Feet:
- For rectangular pools:
Length x Width x Average Depth = Cubic Feet - Note: For pools with varying depth (like a shallow end and a deep end), you should use the average depth.
- For rectangular pools:
- Convert to Gallons:
Cubic Feet x 7.5 = Volume in Gallons
Combining these steps gives you the main formula: Length x Width x Average Depth x 7.5 = Volume in Gallons.
Getting Your Pool's Measurements
- Length and Width: Measure the longest and widest points of the water surface.
- Average Depth:
- For a pool with uniform depth, measure the depth from the waterline to the bottom.
- For a pool with a shallow and deep end, measure the depth in the shallow end and the deep end, add them together, and divide by two to get the average depth.
Using these measurements in the formula provides an accurate estimate of the amount of water your pool holds.
