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Pool Shock Calculator/Liquid Chlorine Shock Calculator
Target Free Chlorine: +10 PPM

Liquid Chlorine Shock Calculator

Zero-Residue Instant Sanitation with 10%–12.5% Sodium Hypochlorite

Liquid chlorine (sodium hypochlorite) is the cleanest way to shock a swimming pool. It leaves zero residue, adds zero calcium, and adds zero cyanuric acid.

Customize Your Pool Parameters

Adjust pool volume or shock severity to re-calculate instantly.

Most Popular
Calcium Hypochlorite (73%)
2 lbs
≈ 2 one-pound bags

Granular shock. Fast-dissolving, adds zero CYA stabilizer.

Cleanest / Zero Dust
Liquid Chlorine (12.5%)
1.6 gal
≈ 205 fluid ounces

Leaves zero residue, zero calcium, and zero CYA. 100% dissolved instantly.

Stabilized Shock
Sodium Dichlor (56%)
2.3 lbs
Adds approx 9 ppm CYA

Includes UV stabilizer. Ideal if your pool has low CYA (<30 ppm).

Recommended Commercial-Grade Pool Shock & Brushes

Avoid cheap big-box shock with low available chlorine (40–50%). Use 68–73% commercial Calcium Hypochlorite or 12.5% Sodium Hypochlorite for maximum algae kill rate.

Check Cal-Hypo Shock 12-Packs on Amazon →Heavy-Duty Algae Brushes →

Liquid Chlorine Advantages Over Granular Powders

• 100% dissolved instantly upon contact with water, reaching full germicidal potential immediately.

• Will never cloud your water or leave undissolved granular dust on pool floors or vinyl liners.

• Economical: 1 gallon of 12.5% liquid chlorine provides the equivalent sanitizing punch of 1.2 lbs of dry shock.

Handling & Storage Guidelines for Liquid Chlorine

Store carboys in a cool, dark location. Liquid sodium hypochlorite degrades under heat and sunlight, losing up to 50% of its active strength if stored in a hot garage over summer months.

Related Pool Shock & Chemical Calculators
→ 10,000 Gallon Shock Calculator→ 15,000 Gallon Shock Calculator→ 20,000 Gallon Shock Calculator→ 30,000 Gallon Shock Calculator→ Green Pool Shock Calculator→ Cloudy Pool Shock Calculator→ Cal-Hypo Dosing Calculator→ Liquid Chlorine Shock Calculator→ Complete Guide: How to Shock a Pool

Frequently Asked Questions: Liquid Chlorine Shock Calculator

For routine shocking (10 ppm), you need 1.6 gallons of 12.5% liquid chlorine. For green water (30 ppm), you need 4.8 gallons.
Only plain unscented 6% household bleach. Avoid splashless, scented, or outdoor bleaches, which contain foaming surfactants that create stubborn pool suds.