Candle fragrance load: how much fragrance oil per jar

What fragrance load means

Fragrance load (FL) is the fragrance oil weight as a percentage of the wax weight, not of the total. 8% FL on 250 g of wax is 20 g of fragrance.

From jar size to grams

total = vessel ml × fill % × wax density
wax = total ÷ (1 + FL ÷ 100)
fragrance = total − wax

Example: 250 ml jar, 90% fill, soy wax density 0.86 g/ml → 193.5 g total → 179.2 g wax + 14.3 g fragrance at 8% FL.

Limits

Wax suppliers publish a maximum load (often 6–10% for container waxes). Going above it can cause sweating, poor burn and safety issues. Density also varies by wax and by temperature, so run a test pour.

Use the free candle calculator on the home page.