Convert a container fill weight and a fragrance load into wax and oil amounts, or start from the wax you already weighed. Load on this page means oil weight divided by wax weight. The math stays in your browser. It is not a formulation or safety recommendation.
Candle makers usually state fragrance load as a percentage of the wax weight, not of the finished pour. If you want a 10% load, you add 10 grams of oil for every 100 grams of wax. When you only know how much the container should hold in total, you have to split that fill weight into wax and oil so that the oil is 10% of the wax, not 10% of the pour. The split is wax = fill ÷ (1 + load) and oil = fill − wax. A 240 g pour at 10% is therefore 218.18 g of wax and 21.82 g of oil, because 21.82 ÷ 218.18 = 10%. If you instead took 10% of 240 g you would be adding 24 g of oil to 216 g of wax, which is an 11.1% load.
If you have already weighed the wax, multiply wax weight by the load to get the oil. If you have both weights, divide oil by wax to see the load you actually used. Use the same unit on both sides; the calculator can show grams or ounces, but it does not convert a recipe from one system to the other beyond labelling the numbers you entered.
Stay within the maximum load published for your specific wax and fragrance. Some combinations tolerate 12% or more; others bloom, leak or foul a wick well below that. This page does not test compatibility, flash point or wick size. Once you know the oil and wax weights, put their costs into the candle cost per unit calculator to get a unit cost for the batch.
The Candle Making Cost Calculator spreadsheet is a $12 one-time download for batch cost, pricing and a restock list. Use it when you want the dollar cost of these weights kept next to your recipe.
Get the candle cost spreadsheet ($12)
On this page, fragrance load is fragrance oil weight divided by wax weight. A 10% load means 0.10 ounces of oil for every 1.00 ounce of wax. That is not the same as oil divided by the combined pour weight.
If fill weight is F and load is L as a decimal, wax = F ÷ (1 + L) and oil = F − wax. Example: 240 g at 10% is 218.18 g of wax and 21.82 g of oil.
No. It is only weight arithmetic. Stay inside the maximum load your wax and fragrance supplier have tested. A calculated amount can still be too high for a given wax, fragrance or container.