Pool Volume Calculator
Calculate density, mass, and volume relationships.
Pool Dimensions
Pool Details
Chemical Levels
Pool Volume
70084 liters
Surface Area
42 m²
Cubic Volume
70.1 m³
Water Weight
154409.2 lbs
Fill Time
At 10 GPM flow rate
Pool Specifications
Pool Size Category
- • Typical for large residential/commercial use
- • Ideal for lap swimming
- • Durable and customizable
How it works
A pool volume calculator finds how much water a pool holds, which you need for dosing chemicals and sizing equipment. Multiply length by width by average depth for cubic feet, then convert to gallons.
Pool volume (rectangular)
Cubic feet = length × width × average depth Gallons = cubic feet × 7.48
- length, width
- pool dimensions in feet
- average depth
- (shallow + deep) ÷ 2
- 7.48
- gallons per cubic foot
Worked example
- Pool 32 ft × 16 ft
- Average depth = 5 ft
- Cubic feet = 32 × 16 × 5 = 2,560
- Gallons = 2,560 × 7.48
≈ 19,150 gallons.
Good to know
- Use the average depth, not the deepest point, for a sloped-bottom pool.
- Round pools use π·r²·depth; ovals and kidney shapes approximate with an average width.
- Accurate volume keeps chemical dosing safe — overdosing is both wasteful and harsh on swimmers.
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Frequently Asked Questions
How do you calculate density?
Density = Mass ÷ Volume. Common units are g/cm³ for solids/liquids and g/L for gases. Water has a density of 1 g/cm³ at room temperature.
Why is density important?
Density helps identify materials, predict buoyancy, calculate material quantities for construction, and solve engineering problems involving weight and volume.
How does temperature affect density?
Most materials become less dense when heated (thermal expansion) and denser when cooled. Water is unusual - it's densest at 4°C, not at freezing.