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Dilution Table for Hydrogen Peroxide

March 18, 2020 by Corinne 50 Comments

How to Dilute 35%, 34% or 29%, 12%, 10%, and 6% Hydrogen Peroxide (H2O2) Down to 3%, 1%, 0.5%, 0.2% and 0.1%

This method is not precise especially at higher concentrations of HP because we are using the 1 part HP as 1 part water. It still is accurate enough for cleaning purposes.

This post contains affiliate links. Upon purchase, I earn a commission at no extra cost to you.

a pair of latex gloves, safety goggles, ear plugs, and a respirator

Personal Safety Equipment Should be Used!

Goggles, gloves, and protective clothing. (Source & Source).


Dilution Table

Dilute 35% Hydrogen Peroxide

1 part 35% H2O2 to 1 part water (math is 35/2) = 17.5% Hydrogen Peroxide

1 part 35% H2O2 to 2 parts water is 35/3 = 11.7% Hydrogen Peroxide

1 part 35% H2O2 to 3 parts water is 35/4 = 8.75% Hydrogen Peroxide

1 part 35% H2O2 to 4 parts water is 35/5 = 7% Hydrogen Peroxide

1 part 35% H2O2 to 5 parts water is 35/6 = 5.83% Hydrogen Peroxide

1 part 35% H2O2 to 6 parts water is 35/7 = 5% Hydrogen Peroxide

1 part 35% H2O2 to 7 parts water is 35/8 = 4.4% Hydrogen Peroxide

1 part 35% H2O2 to 8 parts water is 35/9 – 3.9% Hydrogen Peroxide

1 part 35% H2O2 to 9 parts water is 35/10 = 3.5% Hydrogen Peroxide

1 part 35% H2O2 to 10 parts water is 35/11 = 3.18% Hydrogen Peroxide

1 part 35% H2O2 to 13 parts water is 35/14 = 2.5% Hydrogen Peroxide

1 part 35% H2O2 to 34 parts water is 35/35 = 1% Hydrogen Peroxide

1 part 35% H2O2 to 69 parts water is 35/70 = 0.5% Hydrogen Peroxide

Another way to make 1 gallon of 3% Hydrogen Peroxide: Mix 1 and a quarter cup of 35% HP with 14 and three quarter cups of water.


Dilution Table

Dilute 34% Hydrogen Peroxide

1 part 34% H2O2 to 4 parts water = 6.8% Hydrogen Peroxide

1 part 34% H2O2 to 4.5 parts water = 6% Hydrogen Peroxide

1 part 34% H2O2 to 8 parts water = 3.7% Hydrogen Peroxide

1 part 34% H2O2 to 9 parts water = 3.4 % Hydrogen Peroxide

1 part 34% H2O2 to 10 parts water = 3% Hydrogen Peroxide

Make 1 gallon of 3% Hydrogen Peroxide: Mix just a touch under 1.5 cups 34% HP with 14.5 cups of water.


Dilution Table

Dilute 29% Hydrogen Peroxide

1 part 29% H2O2 to 1 part water = 14.5% Hydrogen Peroxide

1 part 29% H2O2 to 2 parts water = 9.6% Hydrogen Peroxide

1 part 29% H2O2 to 3 parts water = 7.25% Hydrogen Peroxide

1 part 29% H2O2 to 4 parts water = 5.8% Hydrogen Peroxide

1 part 29% H2O2 to 8 parts water = 3.2% Hydrogen Peroxide

1 part 29% H2O2 to 9 parts water = 2.9% Hydrogen Peroxide

How to Make a Gallon of 3% Hydrogen Peroxide: Mix 1 cup, 9 tablespoons, and 2 teaspoons of 29% HP with 14 cups, 6 tablespoons, and 1 teaspoon of water.


Dilution Table

Dilute 27% Hydrogen Peroxide Down


1 part 27% H2O2 to 1.5 parts water = 10.8% Hydrogen Peroxide

1 part 27% H2O2 to 8 parts water = 3% Hydrogen Peroxide

Dilution Table

Dilute 12% Hydrogen Peroxide Down

1 part 12% H2O2 to 1 part water (12/2) = 6% Hydrogen Peroxide

1 part 12% H2O2 to 3 part water (12/4) = 3% Hydrogen Peroxide

1 part 12% H2O2 to 11 part water (12/12) = 1% Hydrogen Peroxide

Make 1 gallon of 3% Hydrogen Peroxide: Mix 4 cups of 12% HP with 12 cups of water.


Dilution Table

Dilute 10% Hydrogen Peroxide

1 part 10% H2O2 to 0.5 parts water (10/1.5) = 6.6% Hydrogen Peroxide

1 part 10% H2O2 to 2 part water (10/3) = 3.3% Hydrogen Peroxide

1 part 10% H2O2 to 2.5 parts water (10/3.5) = 2.85% Hydrogen Peroxide

How to make a gallon of 3% Hydrogen Peroxide: Mix 4.5 cups of 10% Hydrogen Peroxide with just under 11.5 cups of water.


Dilution Table

Dilute 6% Hydrogen Peroxcide

1 part 6% H2O2 to 1 part water (6/2) = 3% Hydrogen Peroxide

1 part 6% H2O2 to 2 parts water (6/3) = 2% Hydrogen Peroxide

1 part 6% H2O2 to 3 parts water (6/4) = 1.5% Hydrogen Peroxide

1 part 6% H2O2 to 4 parts water (6/5) = 1.2% Hydrogen Peroxide

1 part 6% H2O2 to 5 parts water (6/6) = 1% Hydrogen Peroxide


Dilution Table

Dilute 3% Hydrogen Peroxide (10 Volume)

1 part 3% H2O2 to 1 part water (3/2) – 1.5% Hydrogen Peroxide

1 part 3% H2O2 to 2 parts water (3/3) = 1% Hydrogen Peroxide

1 part 3% H2O2 to 5 parts water (3/6) = 0.5% Hydrogen Peroxide

1 part 3% H2O2 to 14 parts water (3/15) = 0.2% Hydrogen Peroxide

1 part 3% H2O2 to 29 parts water (3/30) = 0.1% Hydrogen Peroxide

1 part 3% H2O2 to 69 parts water (3/70) = 0.04% Hydrogen Peroxide

Non-Toxic Disinfectant for Viruses

In order to kill viruses, the CDC recommends three different options. The least toxic and safest one for most people is hydrogen peroxide at at least 0.5%, left on the surface for one minute. Alcohol is also safe for many people to use. Source

Where to Buy Hydrogen Peroxide During the Pandemic

You can find higher concentrations at hydroponic stores and sometimes at gardening stores and hardware stores.

You may be able to find hydrogen peroxide at 12% on Amazon. If they are not sold out the next place I would look is online hydroponic stores.

You can also find some concentrations at beauty supply stores (usually 12%).

Filed Under: Mold Avoidance Paradigm, Mold-Free Interiors Tagged With: healthy cleaning products, healthy interiors

Reader Interactions

Comments

  1. David says

    December 31, 2022 at 6:13 pm

    hi i have a small business i was trying to work out how much 50% h202 to add to my 2000 litre tank to make 3% h202 for healthy lettuce plants .kind Regards dave wade

    Reply
    • Corinne says

      December 31, 2022 at 9:20 pm

      depends if you’re adding it on top of the 2000 or 2000 is the capacity of the tank.

      You can calculate for 100% HP and then double it. 120 L of 50% HP added to 1880 L is 3% solution and 2000 L

      Reply
  2. Alan says

    November 25, 2022 at 2:21 pm

    I have 15 gallons of 50% and what to get it down to 35%

    how much water do I need ?

    Reply
    • Corinne says

      November 26, 2022 at 2:27 pm

      1 part 50% to .42857 part water is 50/1.42857 = 35%
      So for every gallon that you have you want to add 0.42857 of a gallon which is 1622.31 millilitres (which is 6.857 cups)
      6.857 cups x 15 = 102.85 cups

      Reply
  3. Elie says

    October 10, 2022 at 6:22 am

    What %hp is traditionally used in Laundry instead of laundry bleach? Looking to use hp in the washing machine bleach compartment.

    Reply
    • Corinne says

      October 10, 2022 at 2:34 pm

      3%

      Reply
  4. Jennifer says

    October 3, 2022 at 9:22 am

    Hello. I have a gallon of 27% pool peroxide. Can you include a chart for this percentage and also mixing volumes.

    Reply
    • Corinne says

      October 3, 2022 at 1:02 pm

      what do you typically dilute pool peroxide down to?

      Reply
      • Jennifer says

        October 4, 2022 at 6:31 pm

        I don’t; I bought it specifically to dilute for cleaning purposes… Mold and all purpose. I’d like to dilute to 11% and 3%.
        Everything I’ve found gives me dilutions and measurements for 35% and 29%, and not 27%.

        Reply
        • Corinne says

          October 5, 2022 at 5:04 pm

          ok I added it to the post

          Reply
  5. Joanna Mora says

    September 28, 2022 at 8:47 am

    How do I make 12% Hp

    Reply
  6. Davr says

    May 31, 2022 at 1:49 pm

    Just go some 50 percent hp for hydroponics would 2 ml of hp mixed with 20 litres of water be ok for plants

    Reply
  7. Cathy says

    May 27, 2022 at 1:11 pm

    I’m trying to dilute 3% h2o2 to 1%to add to one gallon of water.

    Reply
  8. Anastasialuc says

    May 24, 2022 at 9:38 am

    Does diluting the HP reduce the shelf life and/or efficacy for cleaning purposes?
    Thanks so much

    Reply
  9. Sarah says

    January 22, 2022 at 11:10 pm

    Thank you so much for this collaborative and supportive information! I just want to double check that I’ve got this right (math feels shaky). Is this right:

    I want to achieve a .04% dilution of HP…so I should take 1 part of 3% HP and add it to 69 parts distilled water?

    So I could take 1 teaspoon of 3% HP and then add 69 teaspoons of HP. The resulting solution would be .04 HP?

    Thank you so much and God bless the spirit of people helping people!

    Reply
  10. Peggy Karp says

    January 12, 2022 at 6:20 pm

    Thanks very much for the dilution table. Very helpful!

    I want to make an even more dilute solution. So if I am starting with 1 teaspoon of 3% H202, how many teaspoons, of water do I need to get a .04% solution? Thanks!

    Reply
    • Corinne says

      January 13, 2022 at 4:28 pm

      just added it to that table

      Reply
      • Peggy Karp says

        January 15, 2022 at 4:40 pm

        Thanks very much!

        Reply
  11. Tracey Fraser says

    December 20, 2021 at 6:12 am

    Not understanding any of this ! The question as I understand it , is how do I get a .1% dilution from a 10 volume hydrogen peroxide solution? A simple answer please.

    Reply
    • Corinne says

      December 20, 2021 at 2:19 pm

      10 volume is 3% hydorgen perooxide. Follow the table for the dilution to 1%.

      Reply
      • Tracey says

        December 20, 2021 at 8:42 pm

        Thank you

        Reply
  12. Deb says

    December 19, 2021 at 8:10 pm

    So if I want to take a 35% HP down to a .1% dilution it would be 1 part HP to 349 parts water?
    Thanks for your assist!

    Reply
    • Corinne says

      December 20, 2021 at 2:23 pm

      Yes

      Reply
  13. Jeff Hyett says

    December 2, 2021 at 6:27 am

    I apologize if this question can’t be addressed here. I bought a gallon of 35% food grade HP about 5 years ago and opened it last year. I used about a cup of it. The white plastic container has been closed with the cap since. How do I determine the concentration now?

    Reply
    • Wade says

      January 15, 2022 at 5:00 am

      Balloon and graduated cylinder

      Reply
  14. Rachel says

    November 26, 2021 at 11:49 pm

    If I dilute 5ml of 3% Peroxide with 500ml of distilled water what concentration do I have?
    Thank you

    Reply
    • Corinne says

      November 27, 2021 at 12:07 pm

      That’s 1 part hydrogen peroxide to 100 parts water.

      Reply
  15. Annie says

    September 30, 2021 at 5:04 am

    How to I dilute 3% peroxide down to 0.2%?

    Reply
  16. Annie says

    September 30, 2021 at 5:03 am

    How to I dilute 3% peroxide down to 0.2%?

    Reply
    • MMS says

      October 1, 2021 at 9:31 am

      Don’t do this.

      Reply
    • Steve says

      November 30, 2021 at 8:38 am

      Would it be Ok to use tap water for dilution?

      Reply
  17. Rakesh says

    March 19, 2021 at 8:17 am

    Do All Types of Cosmetic Peroxide up to 12 % (Developer) are restricted in Air & Sea Transportation.
    Can you quote any document where it is clarified that up to 9% o5 up to 12 % Peroxide (Developer) used on Hair with Coloring / Bleaching are exempted from DGR/Hazmat with standard packaging
    like Small packaging of 1000 ml (Retail Packaging)
    Hoping to hear from you very soon.
    Rakesh

    Reply
  18. Rakesh Kumar says

    December 17, 2020 at 11:41 pm

    Hi, we are a non profit organisation working as an eye care service provider. we have to disinfect the spectacle frames used by our patients during the selection of frame. Can we use Hydrogen Peroxide to disinfect the spectacle frames, Also we have 6.5% hydrogen peroxide but we require 0.5%. How can we dilute it.
    Thanks

    Reply
  19. Koran Lanier-newman says

    November 18, 2020 at 7:08 pm

    Can you take hydrogen peroxide with blood pressure meds and kidney disease?

    Reply
    • Corinne says

      November 18, 2020 at 7:28 pm

      The table is meant to be dilution for cleaning with HP.

      Reply
  20. Bill says

    November 13, 2020 at 4:31 pm

    Hi
    How much water and salt do I use to dilute 3% Hydrogen Peroxide to 1%
    Thank you

    Reply
    • Darin says

      September 26, 2021 at 6:31 pm

      Mercola recommends 1tsp salt to 1 pint H2O (i’d say boiled distilled water) for a 9% saline solution.

      Reply
      • Kristy Jones says

        October 10, 2021 at 9:37 am

        How does this answer the question? I already knew how to dilute water to make saline. What I can’t find for the life of me, is the formula to dilute the 3% hydrogen peroxide to the recommended 0.1% to add to the saline water…! (and I’ve tried for an hour now)

        Reply
        • PC says

          November 19, 2021 at 1:33 pm

          29 to 1 to achieve .1% solution. 7.25 tsp normal saline to .25 tsp hp

          Reply
          • Dave says

            December 29, 2021 at 11:04 am

            So if my limited math is correct, to make 1 pint (96 tsp) would be 3.3 tsp of 3% HP.

    • Corinne says

      October 10, 2021 at 5:33 pm

      I’ve added 0.1 percent dilution

      Reply
  21. Mike says

    November 10, 2020 at 7:40 pm

    Hi,

    Just want to ask so that I have got it correct:

    If I put 1dl of 10% Hydrogen Peroxide in a glas and then add 2dl distilled water I will get a concentration of 3.3% Hydrogen peroxide, correct? (1 part 10% to 2 part water (10/3) = 3.3% Hydrogen Peroxide).

    There is a bottle available where I live that is 9.5% concentration of Hydrogen peroxide so seem perfect. It is cheaper to buy the 9.5% bottle than the 3% bottle since it is basically 3 times more hydrogen peroxide in the 9.5% bottle (only $2.79 difference).

    Thanks

    Reply
    • Corinne says

      November 10, 2020 at 8:48 pm

      Yes exactly.

      Reply
  22. L says

    October 21, 2020 at 7:21 am

    OH! The best website I have found to purchase 35% HP is. Comes wonderfully packaged, VERY price conscious.

    Reply
  23. L says

    October 21, 2020 at 7:19 am

    Thank you so very very much! Simplest, best information about this that I have seen!

    Reply
  24. Bhaskar Ramu says

    October 4, 2020 at 7:18 pm

    Can you add dilution table for 10-12% Hydrogen Peroxide as well. Thanks

    Reply
    • Byron says

      November 8, 2020 at 12:31 pm

      Dilute means basically to reduce strentgh. You can not go from 10% to 12% by mixing with water

      Reply
      • Dylan says

        February 10, 2021 at 3:42 am

        I believe he’s asking for dilution tables for 10% and 12% as well. Just a guess though.

        Reply
        • dylan says

          February 10, 2021 at 3:43 am

          nevermind i see its already there!

          Reply
  25. Lexi Rodrigo says

    July 25, 2020 at 10:41 am

    Just what I needed. Thank you very much!

    Reply

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ABOUT ME

Hi, I’m Corinne Segura, I hold a certificate in Building Biology, and a certificate in Healthier Materials and Sustainable Buildings, among other credentials below. I have 8 years of experience helping people create healthy homes.

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