All Pool & Hot Tub Tools
Calculators and dosage guides. Find your pool size or hot tub size for instant chemical amounts.
Pool calculators
- Pool Chlorine Calculator
- Hot Tub Chlorine Calculator
- Pool Shock Calculator
- Pool pH Calculator
- Hot Tub pH Calculator
- Pool Volume Calculator
- Spa Volume Calculator
- Pool Alkalinity Calculator
- Pool Cyanuric Acid (CYA) Calculator
- Saltwater Pool Salt Calculator
- Hot Tub Shock Calculator
- Pool Turnover Rate Calculator
- Chemical Calculator (full)
- Volume Calculator (legacy)
Pool size guides — chlorine
- Chlorine for 10,000 gal pool
- Chlorine for 10,500 gal pool
- Chlorine for 11,000 gal pool
- Chlorine for 11,500 gal pool
- Chlorine for 12,000 gal pool
- Chlorine for 12,500 gal pool
- Chlorine for 13,000 gal pool
- Chlorine for 13,500 gal pool
- Chlorine for 14,000 gal pool
- Chlorine for 14,500 gal pool
- Chlorine for 15,000 gal pool
- Chlorine for 15,500 gal pool
- Chlorine for 16,000 gal pool
- Chlorine for 16,500 gal pool
- Chlorine for 17,000 gal pool
- Chlorine for 17,500 gal pool
- Chlorine for 18,000 gal pool
- Chlorine for 18,500 gal pool
- Chlorine for 19,000 gal pool
- Chlorine for 19,500 gal pool
- Chlorine for 20,000 gal pool
- Chlorine for 20,500 gal pool
- Chlorine for 21,000 gal pool
- Chlorine for 21,500 gal pool
- Chlorine for 22,000 gal pool
- Chlorine for 22,500 gal pool
- Chlorine for 23,000 gal pool
- Chlorine for 23,500 gal pool
- Chlorine for 24,000 gal pool
- Chlorine for 24,500 gal pool
- Chlorine for 25,000 gal pool
- Chlorine for 25,500 gal pool
- Chlorine for 26,000 gal pool
- Chlorine for 26,500 gal pool
- Chlorine for 27,000 gal pool
- Chlorine for 27,500 gal pool
- Chlorine for 28,000 gal pool
- Chlorine for 28,500 gal pool
- Chlorine for 29,000 gal pool
- Chlorine for 29,500 gal pool
- Chlorine for 30,000 gal pool
- Chlorine for 5,000 gal pool
- Chlorine for 5,500 gal pool
- Chlorine for 6,000 gal pool
- Chlorine for 6,500 gal pool
- Chlorine for 7,000 gal pool
- Chlorine for 7,500 gal pool
- Chlorine for 8,000 gal pool
- Chlorine for 8,500 gal pool
- Chlorine for 9,000 gal pool
- Chlorine for 9,500 gal pool
Pool size guides — shock
- Shock for 10,250 gal pool
- Shock for 11,000 gal pool
- Shock for 11,750 gal pool
- Shock for 12,500 gal pool
- Shock for 13,250 gal pool
- Shock for 14,000 gal pool
- Shock for 14,750 gal pool
- Shock for 15,500 gal pool
- Shock for 16,250 gal pool
- Shock for 17,000 gal pool
- Shock for 17,750 gal pool
- Shock for 18,500 gal pool
- Shock for 19,250 gal pool
- Shock for 20,000 gal pool
- Shock for 20,750 gal pool
- Shock for 21,500 gal pool
- Shock for 22,250 gal pool
- Shock for 23,000 gal pool
- Shock for 23,750 gal pool
- Shock for 24,500 gal pool
- Shock for 25,250 gal pool
- Shock for 26,000 gal pool
- Shock for 26,750 gal pool
- Shock for 27,500 gal pool
- Shock for 28,250 gal pool
- Shock for 29,000 gal pool
- Shock for 29,750 gal pool
- Shock for 5,000 gal pool
- Shock for 5,750 gal pool
- Shock for 6,500 gal pool
- Shock for 7,250 gal pool
- Shock for 8,000 gal pool
- Shock for 8,750 gal pool
- Shock for 9,500 gal pool
Pool size guides — pH
- Lower pH — 10,000 gal pool
- Lower pH — 11,000 gal pool
- Lower pH — 12,000 gal pool
- Lower pH — 13,000 gal pool
- Lower pH — 14,000 gal pool
- Lower pH — 15,000 gal pool
- Lower pH — 16,000 gal pool
- Lower pH — 17,000 gal pool
- Lower pH — 18,000 gal pool
- Lower pH — 19,000 gal pool
- Lower pH — 20,000 gal pool
- Lower pH — 21,000 gal pool
- Lower pH — 22,000 gal pool
- Lower pH — 23,000 gal pool
- Lower pH — 24,000 gal pool
- Lower pH — 25,000 gal pool
- Lower pH — 26,000 gal pool
- Lower pH — 27,000 gal pool
- Lower pH — 28,000 gal pool
- Lower pH — 29,000 gal pool
- Lower pH — 30,000 gal pool
- Lower pH — 5,000 gal pool
- Lower pH — 6,000 gal pool
- Lower pH — 7,000 gal pool
- Lower pH — 8,000 gal pool
- Lower pH — 9,000 gal pool
- Raise pH — 10,000 gal pool
- Raise pH — 11,000 gal pool
- Raise pH — 12,000 gal pool
- Raise pH — 13,000 gal pool
- Raise pH — 14,000 gal pool
- Raise pH — 15,000 gal pool
- Raise pH — 16,000 gal pool
- Raise pH — 17,000 gal pool
- Raise pH — 18,000 gal pool
- Raise pH — 19,000 gal pool
- Raise pH — 20,000 gal pool
- Raise pH — 21,000 gal pool
- Raise pH — 22,000 gal pool
- Raise pH — 23,000 gal pool
- Raise pH — 24,000 gal pool
- Raise pH — 25,000 gal pool
- Raise pH — 26,000 gal pool
- Raise pH — 27,000 gal pool
- Raise pH — 28,000 gal pool
- Raise pH — 29,000 gal pool
- Raise pH — 30,000 gal pool
- Raise pH — 5,000 gal pool
- Raise pH — 6,000 gal pool
- Raise pH — 7,000 gal pool
- Raise pH — 8,000 gal pool
- Raise pH — 9,000 gal pool
Hot tub guides
- Chlorine for 200 gal hot tub
- Chlorine for 225 gal hot tub
- Chlorine for 250 gal hot tub
- Chlorine for 275 gal hot tub
- Chlorine for 300 gal hot tub
- Chlorine for 325 gal hot tub
- Chlorine for 350 gal hot tub
- Chlorine for 375 gal hot tub
- Chlorine for 400 gal hot tub
- Chlorine for 425 gal hot tub
- Chlorine for 450 gal hot tub
- Chlorine for 475 gal hot tub
- Chlorine for 500 gal hot tub