Your pool contains an estimated gallons of water when full. In ground Rectangle Pools. Please enter your measurements in feet. A = B = Shallow Depth =.In order to calculate the gallons in a round tank, the radius and the height of the tank’s interior should be measured in feet. The volume is equal to pi times the radius squared times the height times .Calculate volume of a cylinder of radius r and height h using the formula A = r^h. Convert the result to gallons using the appropriate factor..To calculate the volume of a container in gallons, you will usually need to do so by converting the volume from another unit of measurement. You can calculate gallons from any other unit of measurement used to describe volume..Measure the length, width and depth of the tank using a tape measure. You can measure from the inside of the tank or, if preferable, measure the outside and then subtract the width of the tank walls to determine the inside measurement..Measure flow rate or gallons per minute GPM with a gallon bucket and a watch, or through pressure drop foot of head psi measurements, or with a flow meter device..Pool Water Volume In Gallons. To determine the average depth in a pool where the bottom slopes, measure the shallow end, the deep end depth..To find the number of gallons in a pool, first you must find the pool’s measurement in cubic feet and then multiply by the number of gallons in a cubic foot. credit CaronB iStock Getty Images Before adding chemicals, measure the pool’s chlorine and pH levels..Cubic foot of water contains . gallons. Measure the pool length and breadth, multiply together, then multiply buy the mean depth to calculate the volume. Then multiply volume x . for the number of gallons..Knowing how much water your home aquarium holds is critical for the health of your fish. Some chemicals require a certain number of drops per gallon, and estimating wrong can harm your pets. Fortunately, finding the volume of your tank involves one simple math equation. Determining the amount of .

How to Calculate Gallons. Three Parts Calculating Gallons from Other Imperial Units Calculating Gallons from Metric Units Calculating Volume Community Q A. To calculate the volume of a container in gallons, you will usually need to do so by converting the volume from another unit of measurement..Measure the length, width and depth of the tank using a tape measure. You can measure from the inside of the tank or, if preferable, measure the outside and then subtract the width of the tank walls to determine the inside measurement..