Volume by water depth
| Water depth | US gallons | Litres |
|---|---|---|
| 46 in of water | 16,420 gal | 62,150 L |
| 48 in of water | 17,130 gal | 64,850 L |
| 50 in of water | 17,850 gal | 67,550 L |
Formula: 27 × 27 × 4 ft × 5.87 = 17,132 gal.
How many gallons is a 27 ft round × 54 in above-ground pool?
A 27 ft round above-ground pool with 54 in walls holds about 17,130 US gallons (64,850 L) when filled to 48 in of water, about 6 in below the top rail. Volume depends on the water depth, not the wall height, so measure your water and check the table.
Measure your own water depth
17,132gal
About 64,852 L
Average depth 4 ft
Formula: diameter² × average depth × 5.87.
- Pool shapes are never perfect. Treat this as within about 10%, and check it once by adding a known amount of salt or stabilizer and testing the change.
- Use this volume: Chlorine pH Shock All-in-one
Save this test and get reminded when it is time to retest.
Pool Calc for iPhoneComing soon to the App StoreDoses for this pool
| Job | Amount |
|---|---|
| Raise chlorine 1 ppm | 22 fl oz of 10% liquid chlorine |
| Stabilizer 0 → 30 ppm | 4.3 lb |
| Salt 0 → 3,200 ppm | 460 lb (11.5 bags) |
Full dose tables for a pool this size: liquid chlorine for 18,000 gallons, salt and stabilizer. Or put 17,132 gallons straight into the pool chemical calculator.
Check the number once
Manufacturer capacities are usually given at a stated fill level, and liners stretch. To confirm your real volume, add a known amount of salt or stabilizer and see how much the test reading moves: the volume that explains that change is your pool.
Questions
How many gallons does a 27 ft round × 54 in pool hold?
About 17,130 gallons at 48 in of water.
How many litres is a 27 ft round × 54 in pool?
About 64,850 L at 48 in (122 cm) of water.