Pool Volume & Gallons Calculator
Calculate pool water volume in gallons for rectangular, round, oval, and irregular swimming pools.
Interactive Calculator
1. Provide Details
ft
ft
ft
ft
2. Output Results
Average Pool Depth5.5 ft
Volume in Cubic Feet2,816 cu ft
Total Pool Volume21,064 US Gal
How to Calculate: Formula & Steps
Uses geometric volume formulas multiplied by 7.48 gallons per cubic foot (with shape adjustment coefficients).
Formula Used:
Gallons = Length × Width × Avg Depth × Multiplier (7.5 for Rect, 5.9 for Circular, 6.7 for Oval)Step-by-Step Calculation Example
A 16ft × 32ft rectangular pool with a shallow depth of 3ft and deep depth of 8ft (avg depth 5.5ft) holds ~21,120 gallons of water.
Common Mistakes to Avoid
- Using maximum deep end depth instead of calculating average depth across the pool floor slope.
Practical Use Cases
- Sizing pool pumps, filters, and heaters
- Accurate chemical dosing for shock and chlorine treatments
Expert Tips
- Always calculate average depth as (Shallow Depth + Deep Depth) / 2 for slope-bottom pools.
Frequently Asked Questions About Pool Volume & Gallons Calculator
How many gallons of water per cubic foot?
1 cubic foot of water equals approximately 7.48 US liquid gallons.
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