Pond Liner Size Calculator
Free pond tool

Pond Liner Size Calculator

Enter the pond length, width and depth and see the liner size to order, with overlap included.

These tools give planning-level estimates from typical values. They are not quotes, designs or engineering, and results depend on your actual soil, depth, access, local rules and conditions. Only a visit can confirm what a job needs, and we give you a clear price before any work begins.

How it works

Four quick steps.

  1. 01

    Measure the pond

    Length, width and the deepest point.

  2. 02

    Set the overlap

    Extra liner on each edge to tuck under stone.

  3. 03

    Read the size

    The liner to order, rounded to even feet.

  4. 04

    Match the underlayment

    Same area as the liner.

Tips

  • Add extra for waterfalls, streams and steep shelves.
  • A liner that is too short ruins a project, so measure carefully.
  • Underlayment protects the liner from rocks and roots.
Questions

About this tool.

Is this exact?

No. It is a planning guide. We measure the dug pond before we order the liner.

Why add twice the depth?

The liner has to go down one wall, across the bottom and up the other wall.

What thickness should I choose?

Forty-five mil rubber is a common choice for garden ponds, and larger ponds may use thicker material.

Free estimate

Ready for water in your yard?

Quick scheduling, careful work and a clear price before we start.

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