I just need to know how many gallons per inch of water in a 18ft above ground pool so I can estimate for my water bill adjustment with the utility company people.
Gallons per inch
- Thread starter granto7
- Start date
- Apr 10, 2018
- 5,280
- Pool Size
- 18375
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
An 18 ft pool 3' deep is 5700 gallons. That's 1900 gallons per foot. Divide that by 12 (inches) and you get about 158 gallons per inch.
wayner
LifeTime Supporter
- May 31, 2012
- 855
- Pool Size
- 100000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
Another way to look at it is 18' round and 3' deep is 3.014*(18/2)^2*3 cubic feet or 463 ft^3 as the volume of a cylinder is pi*r^2*h. 1 cubic foot is 7.48 gallons. 463*7.48=5707
- Apr 10, 2018
- 5,280
- Pool Size
- 18375
- Surface
- Plaster
- Chlorine
- Salt Water Generator
- SWG Type
- CircuPool RJ-45
All those numbers and I still don't see the answer to his question.
wayner
LifeTime Supporter
- May 31, 2012
- 855
- Pool Size
- 100000
- Surface
- Vinyl
- Chlorine
- Salt Water Generator
- SWG Type
- Jandy Aquapure 1400
You gave it above! I was showing the work on how you get to 5700 gallons.
Multiply Width in feet by Length in feet.
Multiply that by 144
Divide by 231
E.g.
18x36 = 648 square feet
648 x 144 = 93312 cubic inches (one inch deep)
93312 / 231 = 403.9 US gallons
If the pool is round
Radius x radius x 144 x 3.14
Divide by 231 = US gallons
E.g ( 18ft diameter = 9ft radius)
9 x 9 x 144 x 3.14 / 231 = 158 US gallons
