Calculation result
Enter values and select Calculate.
Planning arithmetic only. All variable material assumptions remain visible and user-entered; results are not material, construction, or safety instructions.
Formula and method
Liner length = pond length + 2 × maximum depth + 2 × entered overlap per side. Liner width uses the same formula with pond width. Liner area = liner length × liner width. Dimensions are converted with NIST length factors.
Worked example
For a pond 10 ft long, 8 ft wide, and 2 ft deep, with 1 ft overlap on each edge, the rectangular liner estimate is 16 ft × 14 ft, or 224 ft².
Scope and limitations
This models a rectangular bounding footprint and the maximum depth on each side. Irregular shapes, shelves, slopes, folds, and real excavation geometry can require more material. No liner material, thickness, underlayment, anchoring, drainage, or pond treatment is recommended.
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