CONSTRUCTION
Pond Liner Size
Flexible pond liner size from the pond length, width, maximum depth and edge overlap — liner sheet dimensions, area, weight, water volume and roll strips.
Liner length and width, liner and underlay area, the water volume in m³, litres and US gallons for your shape factor, liner weight from your per-area figure, and strips of a roll width.
Example: A 4 × 3 m pond, 1 m deep, with 0.5 m overlap needs a 7 × 6 m liner (42 m²); at a 0.75 shape factor it holds 9 m³ = 9 000 L; a 1.1 kg/m² liner weighs 46 kg.
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BUILT TO BE UNDERSTOOD
What Pond Liner Size assumes.
No black-box numbers.
How the result is calculated
Describe the formula and its source.
What this utility does not do
State the limits plainly.
SOURCES
- Liner = pond dimension + 2 × depth + 2 × overlap on each axis; volume = L × W × D × shape factor; liner mass per area and roll width from the product
Last reviewed 21 September 2026. How results are checked: How we verify.