Pond Volume Calculator
Estimate pond water volume, fill time, turnover flow, liner dimensions, water weight and filling cost.
Default project preview
1,436 gallons
Fill time
3 hours
Pump flow target
12 gal/min
Liner size
20 × 16 ft
Cubic volume
7.11 yd³
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Water volume = length × width × average depth × shape factor. Pump flow = water volume ÷ turnover minutes. Liner size adds twice the depth and overlap to each plan dimension.
FAQ
Pond Volume Calculator questions
What shape factor should an irregular pond use?+
A factor near 80% is a common planning approximation for rounded or irregular ponds, but measured fill volume is more accurate.
Does pump flow equal the label rating?+
Actual flow drops with head height, pipe length and filters. Review the pump performance curve.
How much liner overlap is needed?+
The required overlap depends on edging and anchoring details. Confirm with the liner manufacturer and installation plan.