Pool Evaporation Calculator — Formule
## How to Calculate Pool Evaporation
Swimming pools lose significant water to evaporation, especially in hot, dry, or windy climates.
### Formula
**Evaporation (gal) = Pool Area * Evap Rate * Months * 0.623 * (1 - Cover Reduction)**
### Typical Evaporation Rates
- Humid climate: 2-3 inches/month
- Moderate: 4-5 inches/month
- Arid/hot: 6-8 inches/month
A pool cover reduces evaporation by 70-90%.
Swimming pools lose significant water to evaporation, especially in hot, dry, or windy climates.
### Formula
**Evaporation (gal) = Pool Area * Evap Rate * Months * 0.623 * (1 - Cover Reduction)**
### Typical Evaporation Rates
- Humid climate: 2-3 inches/month
- Moderate: 4-5 inches/month
- Arid/hot: 6-8 inches/month
A pool cover reduces evaporation by 70-90%.
Exemple Résolu
A 450 sq ft pool evaporating 4 inches/month for 6 months without a cover.
- Gross evaporation: 450 * 4 * 6 * 0.623 = 6,729 gallons
- Net evaporation (no cover): 6,729 gallons
- Monthly loss: 6,729 / 6 = 1,122 gallons
- Cover would save: 6,729 * 70% = 4,710 gallons