Pool Water Weight Calculator
Estimate rectangular pool water volume, total water weight and fill cost from pool dimensions, average depth and fill percentage.
Default project preview
81,131 lb
Water volume
9,722 gal
Cubic volume
1,299.6 ft³
Average depth
4.75 ft
Water weight
40.57 US tons
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Input and output guide
What each value means
The labels and units below are part of this calculator’s visible methodology. Replace every default with measurements or product data from the actual project.
Pool length
Enter this project assumption in ft. The current imperial default is 24 ft.
Pool width
Enter this project assumption in ft. The current imperial default is 12 ft.
Shallow depth
Enter this project assumption in ft. The current imperial default is 3.5 ft.
Deep depth
Enter this project assumption in ft. The current imperial default is 6 ft.
Filled portion of full volume
Enter this project assumption in %. The current imperial default is 95 %. Minimum: 1. Maximum: 100.
Water rate
Enter this project assumption in per 1,000 gal. The current imperial default is 8 per 1,000 gal. Minimum: 0.
How to read the outputs
Water volume
95% fill. Default preview: 9,722 gal.
Cubic volume
rectangular average-depth model. Default preview: 1,299.6 ft³.
Average depth
mean of shallow and deep depth. Default preview: 4.75 ft.
Water weight
water only. Default preview: 40.57 US tons.
Fill allowance
entered water rate. Default preview: $77.77.
Surface area
rectangular plan area. Default preview: 288 ft².
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Average depth = (shallow depth + deep depth) ÷ 2. Water volume = length × width × average depth × fill percentage. Weight uses standard freshwater density.
FAQ
Pool Water Weight Calculator questions
Why is average depth used?+
For a simple uniformly sloped rectangular pool, the mean of shallow and deep depth approximates the water volume.
Does salt water weigh more?+
Yes, slightly. This calculator uses freshwater density.
Can this verify a pool structure or deck?+
No. Structural loads require project-specific engineering and support details.