Pond liner calculator
Estimate a rectangular pond liner sheet and check whether your available stock fits in either orientation.
A conservative simple-profile sheet estimate. Folds, seams, shelves, underlay and installation requirements need separate physical measurement; the tool does not design a liner surface. Change the input or settings to update your result. Results update as you type. Up to 1,000,000 characters.
Your result
How to use Pond liner calculator
- Enter your measured quantities, units and assumptions.
- Review the calculated result and the stated limits.
- Download the report or plan for your project.
Useful next steps
Measure the maximum dimensions
Enter the maximum top length and width, or round-pond diameter, plus the deepest point. Each liner dimension includes twice that depth.
Add allowance on every edge
Enter anchoring allowance per edge, then compare with your available sheet. The result checks a 90-degree rotation as well as the dimensions as entered.
Save the measurements and assumptions
Download CSV and a text or JSON report. The calculation runs on your device. Changing a unit keeps the number you entered, so check both before using the result.