Pool volume calculator
Calculate how many liters and cubic meters of water a rectangular, round or oval pool holds, with variable depth, the cost to fill it and the time with a hose.
How to useHow many liters does the pool hold?
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Pool volume calculator: what it is for
Choose the shape, enter the measurements and the minimum and maximum depths. The calculator finds the average depth, the volume in liters and cubic meters, the cost of the water to fill it, the time with a hose and the recommended filter flow rate.
How to use
- Choose the pool shape.
- Enter measurements and depths.
- See the volume, cost and time.
When to use it
- Dosing chlorine and chemicals.
- Choosing a pump and filter.
- Estimating the water bill to fill it.
Frequently asked questions
How do I calculate the pool volume?
Multiply the floor area by the average depth. In an 8 × 4 m rectangular pool with a depth of 1.2 m to 1.8 m, the average is 1.5 m and the volume is 48 m³, or 48,000 liters.
What if the pool is round or oval?
For a round pool, the area is π × radius². For an oval one, use π × half the length × half the width. Freeform pools can be approximated by the rectangle that contains them multiplied by 0.85.
Why know the volume?
It sets the dose of chlorine and chemicals, the size of the filter and pump and the cost of filling. Product labels give the dose per cubic meter or per thousand liters.
Is it really free?
Yes, 100% free. No sign-up, no subscription and no usage limits. All Tools123 are free.