Pond Liner Calculator
Size a pond liner sheet from pond length, width, depth, and edge overlap using the standard formula.
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Anchoring margin on each side; 1 ft is typical
Enter the pond dimensions to size the liner.
About Pond Liner Calculator
The standard liner formula: each sheet dimension equals the pond dimension plus twice the depth (the liner must go down and back up) plus twice the edge overlap for anchoring. Enter your pond size and get the sheet size to order.
Common uses
- Order EPDM for a backyard koi pond
- Check whether a stock liner sheet covers your dig
Example
Input
10 × 6 ft pond, 2 ft deep, 1 ft overlap
Output
16 × 12 ft sheet (192 sq ft)
Limitations
- Assumes max depth across the whole pond — a conservative sheet for shelved ponds
- Streams and waterfalls need separate liner pieces