Free · Tanks & pipes

Round Pool Capacity Calculator

Estimate water volume for a round pool using diameter and average depth.

  • Formula & worked example
  • Private in your browser
  • No signup
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Calculator inputs

Enter the values you know

Results update as you type. Edit a result to calculate another value, or lock a value to keep it fixed.

Pool dimensions
Water cost
/
Result

Your calculation

Enter enough known values to calculate the blanks.

Use one currency for your figures. Mixed-currency conversions use rates captured October 5, 2026, rather than live exchange rates.

How to use this calculator

  1. Enter the values you know in the units shown. Leave unknown values blank.
  2. Results update automatically as you type. Edit a result to calculate another value, or lock a value to keep it fixed.
  3. Reset restores the starting fields. A worked example appears below.

Private by default

Inputs and results stay in this browser tab. Bookify does not upload or store the values you enter.

Formula and method

A round pool's volume is circular plan area multiplied by average water depth. Use the intended water level rather than the full wall height.

V = π × (diameter / 2)² × average water depth

Worked example

Enter these known values and leave the other values blank.

Pool type
Above ground
Pool shape
Round (circle)
Diameter (length)
5 m
Depth
1.2 m
Pool volume
23561.94 L

Assumptions and limitations

  • Inputs must satisfy the validation rules. Editing a result can recalculate an earlier input; lock values you want to keep fixed.
  • Currency conversions use the captured source rates from October 5, 2026; they are not live exchange rates.

Common questions

What does this round pool volume calculation tell me?

A round pool's volume is circular plan area multiplied by average water depth. Use the intended water level rather than the full wall height.

Can I calculate a different unknown?

Yes. Clear that field and enter the other known values. The calculator uses the available inverse equations.

References

The calculation equations, inverse formulas, units, and input rules were imported from this source. Bookify provides the interface and equation solver.

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