Vegas Hardscape Design

Free Tool

Pool Volume Calculator

Enter your pool's shape and dimensions to estimate its gallons, cubic feet, and fill time — the baseline number behind chemical dosing, heater sizing, and fill costs.

Pool Dimensions
Enter your pool's shape and dimensions.
Estimated Volume
Rough quantities based on the inputs to the left.

17,234

Gallons

2,304

Cubic Feet

4.5 ft

Average Depth

31.9 hrs

Est. Fill Time (garden hose)

Now that you have your gallons, use it in the Pool Chlorine Calculator →

Estimates only — actual volume varies with real-world construction and can differ from a simplified geometric formula. Book a consultation for exact figures on a project we design.

FAQ

Frequently Asked Questions

How do I calculate my pool's volume in gallons?

Multiply length x width x average depth (in feet), then multiply by 7.48 — the number of gallons in a cubic foot of water. For round or oval pools, the calculation uses the actual circle or ellipse area instead of a simple rectangle.

What if my pool is a kidney or freeform shape?

There's no exact formula for an irregular shape, so this calculator applies a rough approximation based on the pool's bounding length and width. For an exact number, check your builder's original plans or have your pool professional measure it directly.

How does average depth work for a sloped pool?

Average depth is simply (shallow end depth + deep end depth) / 2, which works well for a pool with one even, consistent slope. Pools with a distinct hopper or deep-end drop-off will run slightly higher in actual volume than this estimate.

Why does knowing my pool's volume matter?

Gallon count is the baseline for nearly everything else in pool ownership — chemical dosing, heater sizing, and estimating fill time or water cost. Once you have your volume here, you can carry it straight into our Pool Chlorine Calculator.

Is this calculator accurate enough for chemical dosing?

It's a solid planning estimate, not an exact number. For precise chemical dosing, it's worth confirming your volume against your builder's plans or a professional measurement, since even a 10% difference in gallons changes dosing amounts meaningfully.

Designing a new pool from scratch?

This calculator gives you a solid planning estimate for an existing pool. Our design process maps the exact volume, equipment, and layout for a new pool before anyone breaks ground.

Book a 3D Design Consultation