Pool Calculator
Estimate swimming pool volume, water capacity, gallons, liters, and filling costs for residential and commercial pools.
What Is Pool Volume?
Pool volume is the amount of water a swimming pool can hold. It is commonly measured in cubic feet, gallons, or liters. Knowing the exact volume helps determine water treatment, chemical dosing, heating requirements, and filling costs.
How Pool Volume Is Calculated
For rectangular pools, multiply length, width, and average depth. For round pools, use the diameter to calculate the circular area before multiplying by depth.
Rectangle: Length × Width × Depth
Round: π × Radius² × Depth
Gallons = Cubic Feet × 7.48
Benefits of Measuring Pool Volume
- Correct chemical balancing
- Accurate water filling estimates
- Proper pump sizing
- Better heating calculations
- Lower maintenance costs
Average Pool Sizes
| Pool Type | Typical Capacity |
|---|---|
| Small | 5,000–10,000 Gallons |
| Medium | 10,000–20,000 Gallons |
| Large | 20,000–35,000 Gallons |
Tips for Better Estimates
- Use average water depth.
- Measure inside pool dimensions.
- Round values to the nearest inch.
- Check pool shape before calculating.
- Recalculate after renovations.
Frequently Asked Questions
Why is pool volume important?
It ensures proper chemical treatment, water replacement, and equipment sizing.
How many gallons are in one cubic foot?
One cubic foot holds approximately 7.48 gallons of water.
Can this tool estimate filling cost?
Yes. Enter your local water rate to estimate the total filling expense.
