Pool volume calculator

Estimate rectangular pool water volume and fill amount.

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Full pool volume48m³

Water at target fill45.6m³

Water at target fill45,600L

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Estimate rectangular pool water volume and fill amount.

volume = length × width × average depth × fill percentage

Pool length (m): 8; Pool width (m): 4; Shallow depth (m): 1; Deep depth (m): 2; Target fill (%): 95.

Full pool volume: 48 m³; Water at target fill: 45.6 m³; Water at target fill: 45,600 L.

Assumes a rectangular plan and a uniformly sloping floor. Steps, curves, benches, and freeboard need separate allowance.

Results are rounded for display; calculations use unrounded values. Read our calculation methodology.

Estimate rectangular pool water volume and fill amount. The result follows the displayed formula and keeps every adjustable assumption visible.

Use this tool to plan quantities or compare scenarios before making a purchase or technical decision.

Input	What to enter
Pool length (m)	Enter a number of at least 0.000001 and no more than 1000000000000.
Pool width (m)	Enter a number of at least 0.000001 and no more than 1000000000000.
Shallow depth (m)	Enter a number of at least 0.000001 and no more than 1000000000000.
Deep depth (m)	Enter a number of at least 0.000001 and no more than 1000000000000.
Target fill (%)	Enter a number of at least 0 and no more than 100.

What can change the pool volume result?

Assumes a rectangular plan and a uniformly sloping floor. Steps, curves, benches, and freeboard need separate allowance.

Should I round the inputs first?

No. Enter the best measurements available and round only the practical final quantity, such as full packs, boards, sheets, or components.