Calculadora de Piscina
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
V = c·l·p·1000 L; cloro ≈ 1 g/1000 L; t_recirc = V/Q_bomba
About this calculator
The UtilizAí Pool Calculator helps you quickly determine your pool's water volume, the required chlorine dosage for disinfection, and the ideal recirculation time. Simply enter the pool dimensions (length, width, average depth) and the pump flow rate. This tool is useful for homeowners, maintenance professionals, and builders who need accurate estimates for chemical treatment and equipment sizing.
Volume is calculated using the formula V = length × width × average depth × 1000, resulting in liters. Chlorine dosage follows the standard recommendation of 1 gram of chlorine per 1000 liters of water, typical for residential maintenance. Recirculation time is obtained by dividing the total volume by the pump flow rate (in liters per hour), indicating how many hours the pump must run to filter all the water once.
You can use this calculator when planning a pool installation, adjusting the filtration system, or performing chemical treatments. It is especially useful in residential projects to ensure the pump has adequate capacity and that chlorine dosage is safe and effective. Remember that average depth is calculated by adding the minimum and maximum depths and dividing by two.
Important precautions: the formula assumes rectangular or square pools. For irregular shapes (round, oval, L-shaped), volume may vary and a correction factor or professional consultation is recommended. The chlorine dosage is generic; for very dirty water or high temperatures, adjustments may be necessary. Always check your pump specifications and follow the chlorine manufacturer's instructions.
Frequently asked questions
How do I calculate the volume of a round pool with this calculator?
This calculator is for rectangular pools. For round pools, use the formula: volume = π × radius² × average depth × 1000. You can convert the result manually or look for a specific calculator.
What is the ideal chlorine amount for my 50,000-liter pool?
For 50,000 liters, the recommended dosage is 50 grams of chlorine, following the rule of 1 gram per 1000 liters. Adjust according to treatment needs and water conditions.
Is the calculated recirculation time the same as the daily filtration time?
Not exactly. Recirculation time indicates how long the pump takes to filter the entire volume once. For efficient filtration, it is recommended that the pump runs 6 to 8 hours per day, which may vary based on usage and climate.
Should I use the average depth or the maximum depth?
Use the average depth, which is the average of the shallowest and deepest parts. This gives a more accurate volume, especially in pools with a slope.
My pump flow rate is in cubic meters per hour, how do I use it?
Convert to liters per hour by multiplying by 1000. For example, 5 m³/h equals 5000 L/h. Enter this value in the flow rate field.