Ten free calculators The ebook, $27 The Wick Garage waitlist is open
Candle Maker's Tools · No. 01

Fragrance Load Calculator

Dial in the ratio of fragrance oil to wax for your pour. Drag the sliders or tap a number to type it in: everything updates as you go.

Vessel size
Container volume in fluid ounces
oz
1 oz24 oz
Fragrance load
Ounces of fragrance oil to weigh out. Slider sets the load; 8% of the pour.
oz
1%15%
Wax type
Composition
Wax 8.28 oz
Fragrance oil 0.72 oz
Wax needed
8.28oz
Fragrance oil
0.72oz
Total batch weight
9.00oz

Fragrance oil quick reference

The same math as the calculator, laid out by vessel size and fragrance load. In case you want to print it and hang it on your studio wall, next to where you weigh out.

Vessel6%7%8%9%10%11%12%
4 oz0.240.280.320.360.400.440.48
6 oz0.360.420.480.540.600.660.72
7 oz0.420.490.560.630.700.770.84
8 oz0.480.560.640.720.800.880.96
9 oz0.540.630.720.810.900.991.08
10 oz0.600.700.800.901.001.101.20
12 oz0.720.840.961.081.201.321.44
14 oz0.840.981.121.261.401.541.68
16 oz0.961.121.281.441.601.761.92

Vessel size is the weight of the full pour in ounces. Weights are fragrance oil only; the rest of the pour is wax. Stay within the recommended load range for your wax, and always confirm with a burn test. Six Figure Wick, sixfigurewick.com.

Supplies for this batch

Fragrance load is weight-based; here's what you'll be weighing out.

Fragrance oilWeigh in at your chosen % load
Shop
Container waxThe remaining weight of your batch
Shop
Digital scale (0.1 g)Don't eyeball fragrance. Measure it
Shop

Some links are affiliate links. They cost you nothing and help keep every tool on this site free. Disclosure.

How to Calculate Candle Fragrance Load Without Guessing

Fragrance load is one of the first numbers candle makers need to understand. It controls how much fragrance oil goes into the wax, but it also affects burn behavior, scent throw, cure time, and whether the wax can actually hold the oil you are adding.

The cleanest way to calculate fragrance load is to base it on the weight of the wax, not the final combined pour weight. That keeps the math simple and helps you compare batches consistently.

Fragrance oil weight = wax weight × fragrance load percentage

For example, if you are using 16 ounces of wax at a 10% fragrance load, the fragrance oil amount is 1.6 ounces. Your finished batch will weigh about 17.6 ounces before pouring.

What Fragrance Percentage Should You Use?

Most container waxes perform somewhere in the 6% to 10% range, but every wax and fragrance oil behaves differently. Always check your wax supplier's recommended fragrance range and the IFRA documentation for the specific fragrance oil before selling a finished candle.

Why Weight Matters More Than Volume

Use a digital scale and measure by weight. Fragrance oils vary in density, so a tablespoon or fluid ounce of one oil will not always weigh the same as another. Weight-based formulas make your batches easier to repeat and easier to scale.

Frequently Asked Questions

Can I use more fragrance oil for stronger scent throw?

Sometimes, but more oil is not always the fix. Too much fragrance can lead to sweating, poor burn behavior, wick issues, or a candle that never performs cleanly.

Is the IFRA limit the same as the recommended fragrance load?

No. The IFRA limit is a safety maximum for that fragrance category. Your wax may need a lower percentage to burn well.

Next step: once your fragrance load is set, use the Jar Fill Calculator to estimate pour weight, then check your numbers against the Six Figure Wick ebook for the bigger formulation and business picture. When you start testing, keep notes on the wax options and small fragrance samples you compare so your formula stays repeatable.

Get free tools

Sign up and receive our free candle pricing cheat sheet, plus one useful note from the studio each week. Unsubscribe anytime.