Essential Oil Blend Calculator and Recipe Safety Checker

Use this essential oil blend calculator when you're creating a new blend or you've found a recipe on the internet and you want to check if it's safe. It will calculate:

• the dilution of your blend
• the dilution of each oil in your blend
• whether any of the oils exceeds maximum safe dilutions as recommended by Tisserand and Young
• whether your blend has any other safety issues, eg not safe for pregnancy, breast feeding or young children

You might also be interested in our other calculators. If you just want to know the total number of drops of essential oil needed for your desired dilution, try our Simple Dilution Calculator. If you want to convert a recipe to a different dilution or size, try our Recipe Converter. But to check the safety of your blend, use the calculator below.

Instructions for Using the Essential Oil Blending Calculator

e.g. if you want to check the dilution and safety information for a 10 ml rollerball blend that has 3 drops of Peppermint oil, 3 drops of Lemon oil and 2 drops of Cardamom oil, you would:

1. Select 'ml' as the answer to the question 'Is your bottle measured in ounces or ml'
2. Enter 10 as the size of the bottle or container
3. Select 'Peppermint' as the name of the first essential oil and '3' as the number of drops
4. Select 'Lemon' as the name of the 2nd essential oil and '3' as the number of drops.
5. Select 'Cardamom' as the name of the 3rd essential oil and '2' as the number of drops.
6. Click Calculate
7. Note you DON'T need to enter anything for the carrier oil/cream/balm. The calculator works out how much room is left in your bottle/container after you've added the essential oils and uses that as the amount of carrier oil/cream/balm when it's calculating the dilutions.

• Dilutions are calculated based on 20 drops of essential oil per ml. The actual number of drops per ml varies from one oil to another so dilutions are only approximate.
• The maximum recommended dilution for each essential oil is taken from the book Essential Oil Safety by Tisserand and Young. Please note that these are general recommendations and that particularly sensitive people, children, pregnant women, breastfeeding women and the elderly may need to use lower dilutions. You may also need to use lower dilutions if you combine oils that have similar chemical properties.
• We hope you've enjoyed using the Essential Oil Calculator for Blends. Please let us know if you have any feedback.