These two calculators do your fragrance oil math for you. Tell the wax calculator which wax you are using, how strong you want the scent, and how much wax you have, and it returns the fragrance oil amount by weight. The soap and cosmetic calculator does the same for our melt and pour soap and cosmetic bases. Both work in ounces, grams, kilograms, and pounds, so you can scale a recipe up to a production batch or down to a single test pour. Browse the scents themselves in our fragrance oils collection, where every oil lists its IFRA limits, flash point, and fragrance notes.
Fragrance Oil Calculator for Wax
Pick your wax category and type, choose a scent strength, and enter the wax weight. The calculator applies the recommended fragrance load for that wax and shows how much oil to add. Wax and fragrance both affect the final scent throw, so treat the result as a tested starting point and adjust after you burn a test candle.
How to Use the Wax Calculator
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1
Select your wax category
Choose soy wax, paraffin wax, or another wax such as a soy-paraffin blend. The category sets the load range the calculator works within.
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2
Choose the specific wax
Pick the exact wax you are pouring from the list. Different waxes hold different amounts of oil, so this changes the result.
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3
Set the scent strength
Choose light, medium, or strong. Strong loads up to the wax's recommended maximum; lighter settings reduce the load.
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4
Enter the wax weight and unit
Type the total weight of the wax you are melting and choose ounces, grams, kilograms, or pounds. The calculator returns the fragrance oil amount, and you can switch the displayed weight unit at any time.
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5
Reset to start over
Use the reset button to clear every field and run a new combination.
Typical Fragrance Load by Wax
| Wax type | Typical maximum load |
|---|---|
| Soy (container) | 6–11% |
| Paraffin (container) | 6–10% |
| Soy-paraffin blend | 8–10% |
| Pillar / mold wax | 3–6% |
The percentages above are typical maximum fragrance loads for each wax type. You can load up to that maximum, but never past it: each wax retains only so much fragrance oil, and any excess separates from the wax instead of adding throw. Make sure to use at least the minimum recommended amount as well.
Fragrance Oil Calculator for Soap & Cosmetic Bases
Use this calculator for our melt and pour soap bases and cosmetic bases. Select the base category and type, enter the base weight, and it returns the fragrance oil amount by weight for that base.
How to Use the Soap & Cosmetic Calculator
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1
Select the base category
Choose melt and pour soap bases or cosmetic bases. Each category has its own safe load range.
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2
Choose the specific base
Pick the exact base you are working with. The calculator sizes the load to that base.
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3
Enter the base weight and unit
Type the total base weight in ounces, grams, kilograms, or pounds, and the result appears immediately.
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4
Switch the displayed unit if needed
Change the fragrance weight unit to match your scale.
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5
Reset to start over
Clear all fields and run a new combination.
Most of our fragrance oils work in soap and skincare, and each product page flags soap and lotion compatibility alongside its IFRA limits, flash point, and fragrance notes. Confirm the IFRA level for your specific application before using the fragrance oil.
Find Your Scent
Once you know how much fragrance oil a recipe needs, choose the scent. We carry over 275 fragrance oils, each with its IFRA limits, flash point, top, middle, and base notes, vanillin content, and soap and gel compatibility on the product page. To choose and blend scents that throw well, see our scent guide.