Pool volume calculator
Pool gallons for chemical dosing, heater sizing or refill planning.
Short answer: Rectangle: gal = L × W × avg depth × 7.48. Oval/round: multiply by 0.89. 32 × 16 ft × 5 ft avg = 19,150 gal. Enter your measurements above and the pool volume calculator returns the quantity, unit conversions and an estimated cost instantly, in imperial or metric — no sign-up needed.
What do you need to measure?
What is the answer?
Gallons (rectangle)
19,149
Gallons (oval/round)
17,042
Liters
72,478
How does the pool volume calculator work?
Rectangle: gal = L × W × avg depth × 7.48. Oval/round: multiply by 0.89.
What does a worked example look like?
32 × 16 ft × 5 ft avg = 19,150 gal.
What do people ask most?
›How do I find average depth?
Add shallow + deep depths, divide by two.
›Why 7.48?
7.48 US gallons in one cubic foot of water.
Which pool calculator should you use next?
Pool salt calculator →Free chlorine dose →Pool heater BTU calculator →pH decreaser (muriatic acid) calculator →Calcium hardness calculator →Pool pump run time calculator →Pool cover heat savings calculator →Pool refill cost calculator →Winterize chemical kit calculator →Above-ground round pool volume →Cyanuric acid (stabilizer) calculator →
Where can you learn more?
Read field notes on estimating and materials, or browse every calculator we make.
What should you read before you order materials?
Field notes from real jobs that explain the numbers behind this calculator.
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