Bleach Dilution Calculator

Your details

The sodium hypochlorite strength printed on your bleach bottle. Common values: regular household bleach 5.25-6%, ultra/concentrated 8.25%, pool bleach 10-12.5%.
%
Parts per million of available chlorine. Typical ranges: 100-200 ppm food sanitizing, 500-600 ppm surface disinfection, 1000 ppm general disinfection, 5000 ppm blood spills.
ppm
The total volume of working solution you want to make.
Bleach to addGeneral disinfection
0.02 L

Volume of stock bleach required

Water to add0.98 L
Resulting concentration1,000ppm
Resulting concentration (%)0.1%
Dilution factor1 : 52
1,000 ppm
Food sanitizing<200Surface disinfection200-700General disinfection700-2000High-level / sporicidal2000+

Add 0.02 L of bleach to 0.98 L of water for a 1000 ppm solution.

  • This is a general-purpose disinfection strength. The CDC uses 1000 ppm as a standard disinfection level for non-critical surfaces.
  • Allow at least 1-2 minutes contact time; keep surfaces visibly wet for the full dwell period.
  • Diluted bleach degrades quickly: prepare fresh solution daily and discard any unused solution after 24 hours.

Next stepVerify the final concentration with a free chlorine test strip if this solution will be used in a healthcare, food-service, or regulated environment.

 = Powered by OnlyCalculators