# Calculate Your Pool's Water Volume

**URL:** <https://forums.thehomestack.io/t/calculate-your-pools-water-volume/355>\
**Category:** DIY - Do It Yourself\
**Created:** [August 30, 2009, 2:26pm UTC](https://forums.thehomestack.io/t/calculate-your-pools-water-volume/355 "2009-08-30T14:26:26Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![system](https://forums.thehomestack.io/uploads/default/original/1X/161426793bc0d8bdf0d1a6692b3e44446861cc72.jpeg) [@system](https://forums.thehomestack.io/u/system)\
**Post date:** [August 30, 2009, 2:26pm UTC](https://forums.thehomestack.io/t/calculate-your-pools-water-volume/355/1 "2009-08-30T14:26:26Z")

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In order to figure out proper doses of chemicals for your pool, you need to determine how many gallons of water it holds. To do that, you need to know four different numbers: the length, width, average depth, and a multiplier that determines gallons. Here is the formula:

```auto
Length * Width * Average Depth * Multiplier = Gallons

```

Determine the Multiplier:

Rectangle, square, or free-form pool:

```auto
multiplier = 7.5

```

.

Round or Oval pool:

```auto
multiplier = 5.9

```

.

Determine the Average Depth:

To determine the average depth in a pool where the bottom slopes, measure the shallow end, the deep end depth. Add them together and divide by two (2).

Example: Shallow End = 2’. Deep End = 10’

```auto
2' + 10' = 12'; 12'/2 = 6' Average Depth

```

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<div class="post-metadata">

**Author:** ![McGeorge](https://forums.thehomestack.io/letter_avatar_proxy/v4/letter/m/919ad9/32.png) [@McGeorge](https://forums.thehomestack.io/u/McGeorge)\
**Post date:** [December 18, 2017, 6:05pm UTC](https://forums.thehomestack.io/t/calculate-your-pools-water-volume/355/2 "2017-12-18T18:05:30Z")

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Man, I didn’t know that calculating your pool’s water volume would require this much formula.