Pond Volume & Liner Calculator
Rectangular Pond
Calculate volume and liner for a rectangular pond
ft
ft
ft
Circular Pond
Calculate volume and liner for a circular pond
ft
ft
Formula
Gallons = Length × Width × Depth × 7.481; Liner = (L + 2D + 2) × (W + 2D + 2)
Frequently Asked Questions
How do I calculate pond liner size?
Add twice the depth plus 2 feet of overlap to both the length and width of the pond. For example, a 10x6 pond that is 3 feet deep needs a liner that is (10+6+2) x (6+6+2) = 18 x 14 feet.
How many gallons is my pond?
For a rectangular pond: Length x Width x Depth (in feet) x 7.481 = gallons. For a circular pond: pi x radius^2 x Depth x 7.481 = gallons.