Candle Fragrance Calculator: Safe Load by Wax Type
Measuring wax and fragrance together starts with a scale, not a measuring cup: weigh your melted wax first, then multiply that weight by your fragrance load percentage and divide by 100 to get the fragrance oil weight. At soy's recommended 8% load, 16 oz of wax takes 1.28 oz of fragrance oil, and 100 g of wax takes 8.0 g. Add the oil once the wax has cooled to the temperature your wax type calls for - 175-185°F for soy, 185-195°F for paraffin - stir for a full two minutes so it binds instead of evaporating, then let the wax cool further to its actual pour temperature before filling containers.
Enter your own wax weight, wax type and fragrance percentage below for an exact figure, or read the safe-range table further down the page for the numbers without the tool.
Professional Fragrance Calculator
Natural wax with excellent cold throw
Enter your total wax amount
Adjust for optimal scent throw
Professional fragrance load calculations based on wax type specifications. Each wax has different fragrance holding capacity and optimal temperature ranges.
Always conduct test burns to optimize scent throw. Environmental factors, container size, and specific fragrance oil properties can affect final results.
See the safe-load range for every wax type and how to measure wax and fragrance together on the fragrance load calculator page.
Safe Fragrance Load by Wax Type
Every wax holds a different amount of fragrance oil before it stops binding. These are the minimum, recommended and maximum loads our engine uses, the same figures the calculator above loads when you pick a wax type.
| Wax Type | Minimum | Recommended | Maximum | Notes |
|---|---|---|---|---|
| Soy | 6% | 8% | 10% | Best scent throw when poured at proper temperature |
| Paraffin | 8% | 10% | 12% | Higher fragrance capacity than natural waxes |
| Beeswax | 3% | 4% | 6% | Lower fragrance capacity due to natural scent |
| Coconut | 6% | 8% | 10% | Excellent scent throw, best for container candles |
| Parasoy Blend | 8% | 10% | 12% | Combines benefits of both wax types |
| Custom Blend | 6% | 8% | 10% | Fragrance load depends on blend composition |
What Goes Wrong Outside the Range
Below the minimum
Weak cold and hot throw. The candle looks and burns fine but barely carries scent across a room, which is the most common complaint traced back to fragrance load.
Above the maximum
Oil that cannot bind into the wax pools on the surface or seeps out, causing sooting, poor burn and a safety risk since the excess is flammable liquid rather than wax.
Frequently Asked Questions
How do I calculate fragrance oil for candle wax?
Multiply your wax weight by your fragrance load percentage and divide by 100. At soy's recommended 8% load, 16 oz of wax takes 1.28 oz of fragrance oil, and 100 g of wax takes 8.0 g. The calculator above runs this for any wax weight, wax type and percentage.
What is a safe fragrance load percentage for candle wax?
It depends on the wax. Soy holds 6-10%, paraffin and parasoy blends hold up to 12%, coconut sits with soy at 6-10%, and beeswax is the lowest at 3-6% because its natural honey scent limits how much added fragrance it can hold. See the full table below for every type, or use the calculator above to load your wax type's range automatically.
What happens if I use too much fragrance oil?
Past the wax's maximum load, the oil cannot fully bind into the wax and starts pooling on the surface or seeping out of the finished candle. That free oil is flammable liquid sitting on top of a flame, not wax, so it causes sooting, poor burn and a real safety risk rather than just a stronger scent. Stay inside the range for your wax type and confirm with a burn test before you scale up a batch.
Does fragrance load change my wick size?
Yes. More fragrance oil in the melt pool burns hotter, so our wick sizing engine applies a fragrance multiplier that nudges the recommended wick size up as the percentage rises. See the wick size chart for the exact multiplier and the recommended size for your container.