Calculate pool water volume and chemical amounts for rectangular and oval pools. Free online pool volume calculator with chemical dosage estimates.
The pool water calculator determines your swimming pool's water volume and provides estimated chemical dosage amounts. Accurate volume calculation is essential for proper chemical treatment, preventing algae growth, and maintaining safe swimming conditions. Always test your water before adding chemicals.
Rectangular: Volume = L × W × D × 7.48 (gal)
Oval: Volume = π × (L/2) × (W/2) × D × 7.48 (gal)
1 cubic foot = 7.48 gallonsPool volume is calculated by multiplying the pool's dimensions in feet to get cubic feet, then converting to gallons (1 cubic foot = 7.48 gallons). For oval pools, the area formula uses π × semi-major × semi-minor axis. Chemical amounts are based on standard dosages per 10,000 gallons of water.
| Input | Output |
|---|---|
| 20×10×5 ft rectangular | 7,480 gallons | Chlorine: ~42g | Stabilizer: ~254g |
| 16×8×4 ft oval | 3,011 gallons | Chlorine: ~17g | Stabilizer: ~102g |
| 30×15×6 ft rectangular | 20,196 gallons | Chlorine: ~113g | Stabilizer: ~687g |