About this calculator

Liner length = pond length + 2 × max depth + 0.6 m overlap. Same formula for width. Always round up — EPDM liners are sold in 2 m and 4 m widths typically.

Frequently asked questions

What does the Pond Liner Calculator do?

EPDM/butyl liner size for a garden pond. Liner length = pond length + 2 × max depth + 0.6 m overlap. Same formula for width. Always round up — EPDM liners are sold in 2 m and 4 m widths typically.

Is the Pond Liner Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Pond Liner Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified pond building professional before committing to a purchase or a job.

What inputs does the Pond Liner Calculator need?

Enter values for: Pond length (m), Pond width (m), Max depth (m). Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Pond Liner Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.