# Gallons?

#### Apokalo

##### New member
Hello all, so how do I figure how many gallons is my pool?

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#### Richard320

TFP Expert
Break out the tape measure.

If it's rectangular, round, or oval, poolmath can do the math for you, down at the bottom. If it's more freeform, then you'll need to make a sketch and get dimensions and depths and calculate it in sections.

#### rkoustas

##### New member
Hello all, so how do I figure how many gallons is my pool?

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If you know the pool builder, they may have records. The previous owners left the pool builder's contact information. I just called them, gave my address and they looked it up...

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#### Apokalo

##### New member
Thank you very much guys. You are rock stars!

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#### spinPHD

##### Well-known member
A couple tricks I have used to figure out my pool in gallons.

1.) If you ever decide to drain your pool, before refilling put the hose(s) that you use to fill your pool into a 5-gallon buck and determine how long it takes to fill the bucket. Then when you fill the pool, keep track of the time when you start and finish the fill. You can then calculate how many gallons your pool is based upon how long it took you to fill it up.

#### jeffbrig

##### Well-known member
2.) An even easier method is to determine size based upon how much your FC raised after adding chemicals.
....
Also, try to use a fresh batch of chlorine.
Glad you mentioned freshness of chlorine. In reality, I don't think you can draw accurate conclusions, because even "fresh" chlorine may not have been stored in ideal conditions, and may not reflect the strength printed on the bottle.

#### borjis

A couple tricks I have used to figure out my pool in gallons.

1.) If you ever decide to drain your pool, before refilling put the hose(s) that you use to fill your pool into a 5-gallon buck and determine how long it takes to fill the bucket. Then when you fill the pool, keep track of the time when you start and finish the fill. You can then calculate how many gallons your pool is based upon how long it took you to fill it up.