Volume by water depth
| Water depth | US gallons | Litres |
|---|---|---|
| 24 in of water | 1,690 gal | 6,410 L |
| 27 in of water | 1,900 gal | 7,210 L |
| 29 in of water | 2,040 gal | 7,740 L |
Formula: 12 × 12 × 2.25 ft × 5.87 = 1,904 gal.
How many gallons is a 12 ft round × 30 in above-ground pool?
A 12 ft round above-ground pool with 30 in walls holds about 1,900 US gallons (7,210 L) when filled to 27 in of water. Volume depends on the water depth, not the wall height, so measure your water and check the table.
Measure your own water depth
1,904gal
About 7,206 L
Average depth 2.2 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 | 2.4 fl oz of 10% liquid chlorine |
| Stabilizer 0 → 30 ppm | 7.7 oz |
| Salt 0 → 3,200 ppm | 51 lb (1.3 bags) |
Full dose tables for a pool this size: liquid chlorine for 2,000 gallons, salt and stabilizer. Or put 1,904 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 12 ft round × 30 in pool hold?
About 1,900 gallons at 27 in of water.
How many litres is a 12 ft round × 30 in pool?
About 7,210 L at 27 in (69 cm) of water.