Pool Volume Calculator: How Many Gallons Is My Pool?

Multiply length × width × average depth × 7.48 for a rectangle pool. Average depth is the shallow end plus the deep end, divided by 2. For a round pool use diameter × diameter × average depth × 5.9. For an oval pool use length × width × average depth × 5.9. For a kidney or freeform pool use length × average width × average depth × 6.7.

Most backyard pools around Roseville and Sacramento hold about 10,000 to 25,000 gallons. A 16 × 32 ft rectangle pool that goes from 3.5 ft to 6 ft deep holds roughly 18,000 gallons.

Every chemical dose, from chlorine and acid to stabilizer and salt, is measured per gallon. Volume also affects how long your pump needs to run and how hard your filter works. Guessing wrong means wasted chemicals or water that never stays balanced.

Yes. Chemical-only service starts at $120 per month and full service at $155 per month for pools up to 10,000 gallons, plus $10 for each additional 10,000 gallons. George confirms your pool size before your price is final. See your exact price here.

It is a good estimate, usually within about 10%. Sloped floors, rounded corners and freeform shapes make every pool a little different. If you are on monthly service with The Goods, we measure your pool and keep the volume on file in your client portal.