Swimming Pool Water Loss Calculator

You can estimate daily or weekly water loss with a Swimming Pool Water Loss Calculator, factoring in evaporation, leaks, and splash-out. By entering pool size, temperature, humidity, and wind speed, it provides an accurate water loss estimate. This tool helps pool owners manage water usage and spot hidden leaks early.

Pool Water Loss Calculator

Pool Shape:

Length (ft):

Total length of the pool

Width (ft):

Total width of the pool

Diameter (ft):

Total diameter of the pool

Longest Length (ft):

The longest length of the oval pool

Widest Width (ft):

The widest width of the oval pool

Longest Length (ft):

The longest length of the kidney pool

Widest Width (ft):

The widest width of the kidney pool

Length A (ft):

Width A (ft):

Length B (ft):

Width B (ft):

Longest Length (ft):

The longest length of the irregular pool

Widest Width (ft):

The widest width of the irregular pool

Average Depth (ft):

The average depth of the entire pool

Date of First Reading:

Water Level 1 (in.):

The water level in inches from the top of the pool

Date of Second Reading:

Water Level 2 (in.):

The water level in inches from the top of the pool

Your pool is losing approximately:

inches per day

gallons per day

Pool Water Evaporation Chart

This calculation is based on the following assumptions:

Pool Surface Area: 50 m2
Water Temperature: 25 °C
Air Temperature: 25 °C
Relative Humidity: 60%

Here’s a glimpse of the evaporation rates at various wind speeds:

Wind Speed (m/s)	Evaporation Rate (kg/hour)	Evaporation Rate (Gallons/day)
0.0	9.96	63.15
0.1	10.73	68.04
0.2	11.50	72.94
0.3	12.28	77.84
0.4	13.05	82.73

Pool Water Loss Calculator

Pool Water Evaporation Chart

Check Additional Pool Metrics