H₂O₂ Dilution Calculator
Calculate the precise amounts of hydrogen peroxide and water needed to achieve your target concentration.
Dilution Results
Safety Guidelines
H₂O₂ Dilution Guidelines For Different Applications
Proper dilution of hydrogen peroxide ensures both effectiveness and safety. The calculator above helps you determine precise measurements, while this guide provides context for common applications and concentration levels.
Standard Concentration Reference Table
Dilution Formulas For Reference
Specific Application Recommendations
Wound Cleaning
Recommended: 3% maximum
The standard 3% drugstore hydrogen peroxide is already at the appropriate concentration for wound cleansing. Higher concentrations can damage healthy tissue and delay healing.
Hydroponics
Recommended: 0.01-0.1% final solution
When using H₂O₂ in hydroponic systems, extremely dilute solutions (starting with 3% H₂O₂ further diluted to 0.01-0.1%) help control root pathogens without damaging plant roots.
Pool Treatment
Recommended: 35% diluted to 0.5ppm
For a 10,000-gallon pool, approximately 3-4 cups of 35% H₂O₂ will raise levels by about 0.5ppm. Always test water chemistry before and after treatment.
Mold Remediation
Recommended: 3-10% solution
Higher concentrations (starting with 35% diluted to 3-10%) are more effective for mold treatment but require proper ventilation and protective equipment.
Critical Safety Protocols
Proper Storage
Store hydrogen peroxide in its original container away from direct sunlight. For diluted solutions, use dark or opaque containers to preserve potency. Never store in glass containers with metal lids, as H₂O₂ can react with metals.
Dilution Procedure
Always add hydrogen peroxide to water, never water to hydrogen peroxide. This reduces splashing of concentrated solution and provides better control during the dilution process.
Protective Equipment
For concentrations above 3%, always wear chemical-resistant gloves and eye protection. For concentrations above 10%, also use face shields and protective clothing to prevent skin contact.
Spill Management
For small spills, dilute with large amounts of water. For larger spills, use commercial absorbents designed for peroxide. Never use paper towels or other combustible materials, as they can spontaneously ignite when the peroxide dries.