Pool Volume Calculator

Pool Calculator - Volume

A Swimming Pool Chemical Calculator

Adjust sliders to calculate pool gallons.

Select A Pool Shape
pool calculator round pool volume

Most above ground Pools Depth (PD) are measured in inches. Standard Sizes are 48", 52" and 54" tall. The Pool Length (PL) is measured in feet.

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Knowing the pool volume is extremely important in calculating the amount of chemicals needed to add to the water when adjusting the pool chlorine, pH, stabilizer, alkalinity, salt or any other chemical levels. Read more below on using the pool calculator to help balance and maintain safe clean pool water.

The pool gallon calculation will automatically be saved and entered in the other calculators.

Sponsored By:
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Pool Calculator

After calculating the pool volume, use the other pool calculators to help balance the other pool chemicals. Get answers to questions like “how much liquid chlorine to add to pool?” or “how much muriatic acid to add to pool?” The Turnover Time, Flow Rate, and Filter Size calculators can help select adequate equipment and troubleshoot pool water circulation problems. This pool calculator is a Progressive Web App and can be saved to any mobile device home screen and accessed just any other app.

Pool Testing - Pool Test Kit

Pool water should be tested at least 2 - 3 times a week depending on previous water condition and swimmer load. Testing the pool water is super easy and can be done with a pool test kit using chemical reagentspool calculator chemical reagents or test stripspool calculator test strips. There are some digital chemistry meterspool calculator digital meters available that make testing the water quick and easy. For the most accurate readings, pool water samples should be collected from at least elbow deep. Once the current pool chemical values are known, use the Pool Chemical Calculator app to take the guesswork out of factoring how much of each chemical to add.

Pool Chemicals

There are many options for maintaining clean pool water for swimmers. One common factor among all sanitizing systems whether it be chlorine, a salt water pool, hydrogen peroxide, ozone, baquacil, ultraviolet or some other system, they all must be monitored, tested, and balanced. Understanding the pool chemicals being used for sanitation and their impact on things like pH is necessary to providing a safe and pleasant pool environment. Learn more about each pool chemical on the different calculator pages.

Better Sanitizing Options

There are some serious health risks with unbalanced pool water. Contaminants and bacteria like e-Coli are most commonly treated with chlorine. Chlorine does an adequate job as a sanitizer, but it has its drawbacks and limitations. The use of chlorine requires the use of stabilizers, and that's usually in the form of cyanuric acid. Chlorine will not stay in the pool water long enough to be an efficient sanitizer without the addition of a stabilizer. Chlorine and stabilizers both have an extensive list of swimmer related health issues attributed to their use.

More modern and cost-efficient cleaning options exist that provide better sanitizing power. Oxygen Pools uses the power of oxygen in the form of ozone to naturally clean the water resulting in a healthier natural swimming pool without the use of salt, chlorine, and stabilizers. Even eliminating things chlorine can’t like Cryptosporidium, Giardia, and Rotavirus. Read more about how Oxygen Pools - Chlorine Free Water Pool Water Treatment System can improve your water at Oxygenpools.com.

Pool Math

Don't be the one standing around in the heat of the summer looking at a cloudy pool. Taking the time to understand the pool math behind balancing the pool water is essential for anyone tasked with caring for a swimming pool. Beat the heat and save Pool Chemical Calculator to any mobile home screen and always be ready.

Calculating Pool Gallons

The formula for calculating pool volume requires knowing two factors. The surface area and the average depth in feet. For “L” shaped pools or complex shapes, divide the pool into smaller simple shapes and do the calculation for each one, and add the totals back together.

pool gallon calculator sections

Calculate The Pools Surface Area

Finding the surface area of the pool requires determining the shape of the section being calculated:

  • Square/Rectangle: Area = Length x Width
  • Circle: Area = Radius x Radius x 3.14

Those two formulas can be used to calculate the surface area of most pool sections.

Calculate The Average Depth

Finding the average pool depth requires knowing how deep and how shallow the pool section being calculated is:

  • Average Depth = (Deep End Depth + Shallow End Depth ) / 2

Gallons In a Cubic Foot

There are 7.48 gallons of water in a cubic foot. Multiplying the surface area and average depth gives the total number of cubic feet in the pool. Then multiplying the total number of cubic feet by 7.48 the number of gallons in a cubic foot, gives the total number of gallons in the pool.

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