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Pond Liner Calculator - Calculate Pond Liner Size

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Choosing the correct pond liner is one of the most important steps when building a garden pond, koi pond, or water feature. A properly sized pond liner ensures long-term water retention, prevents leaks, and provides a stable foundation for all other pond products.

At Hydro Experts, we supply premium pond liners, pond pumps, pond filters, and complete pond supplies for residential and commercial pond installations across Australia. Use our free pond liner calculator to accurately determine the liner size you need before purchasing.

Why Correct Pond Liner Sizing Is Important

  • Prevents liner stretching and edge slippage
  • Allows secure edging with rocks or pavers
  • Reduces water loss and future maintenance
  • Improves pond lifespan and durability

How to Measure Your Pond

Measure the maximum length and width of your pond at ground level. Then measure the deepest point of the pond from the surface to the bottom. These measurements are used to calculate the correct liner size with sufficient overlap.

Our calculator includes an allowance to ensure enough liner is available for proper anchoring, making it suitable for EPDM pond liners, PVC liners, and rubber pond liners.

Once you have your result, explore our range of pond liners, underlay, pond filtration systems, and water treatments to complete your pond setup with confidence.

Pond Liner Calculator