ROCKWORLD POND PLANNING TOOL

Pond calculator

Estimate your pond volume, liner size and the water flow your pond requires. Measurements do not need to be exact, but realistic average dimensions give the best result.

1. Choose the pond shape

Rectangular Oval Circular

2. Enter the dimensions

Lengthmetres Widthmetres Average depth metres Maximum depth metres

Average depth is used for water volume. Maximum depth is used for liner sizing. For an irregular pond, use its longest length and widest width.

3. Planning allowances

Liner overlap at each edgemetres Complete pond turnover

YOUR FIRST ESTIMATE

Calculated requirements

Estimated volume12,000 litres2,640 imperial gallons

Baseline system flow12,000 litres per hourAllow additionally for pipework and lift height

Minimum liner size7 × 6 metresIncludes the selected overlap on every edge

Shop pond pumps Read the Waterfall Pump Selection guide

Important: This is a planning estimate, not a final equipment specification. Actual pump flow falls because of pipe resistance, bends, UV clarifiers, filters and vertical lift. We recommend measuring the excavated pond before ordering liner.