Candle Scent Percentage Calculator

The candle scent percentage calculator helps candle makers determine the exact amount of fragrance oil to add to a batch of candle wax. The fragrance load is the percentage of fragrance oil relative to the weight of wax. Getting this right is essential: too little fragrance and the candle has a weak throw, too much and the candle can smoke or develop safety issues. This tool lets you choose your wax type to see the typical recommended fragrance range, enter your exact wax weight, and set your desired scent percentage to get the fragrance oil amount in grams and ounces.

% of wax weight (not total batch)
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Candle fragrance formula

Fragrance oil (g) = Wax weight (g) x (Scent % / 100)
Total batch (g) = Wax weight + Fragrance oil
Fragrance oil (oz) = Fragrance oil (g) / 28.3495

Always respect the maximum fragrance load for your specific wax. Test small batches first and record your results to build your own reference chart.

Frequently asked questions

What is the maximum fragrance load for candle wax?

The maximum fragrance load depends on the wax type. Soy wax typically holds 6 to 10% fragrance oil. Paraffin wax can hold 6 to 12%. Coconut wax can hold up to 12%. Beeswax typically holds only 3 to 6% due to its dense structure. Exceeding the maximum load causes fragrance oil to pool on the surface or seep out of the candle.

How do I calculate fragrance oil for a candle batch?

Fragrance oil (g) = Wax weight (g) x (Fragrance % / 100). For example, 500 g of soy wax at 8% fragrance load requires 40 g of fragrance oil. Some candle makers calculate fragrance as a percentage of total batch weight (wax + fragrance), but percentage of wax weight is the most common convention.

Does fragrance percentage affect burn performance?

Yes. Too little fragrance and the candle has a weak cold throw and hot throw. Too much fragrance and the excess oil can cause smoking, poor burn pools, or fire safety issues. Always test a new fragrance and wax combination before making large batches.

What is the difference between cold throw and hot throw?

Cold throw is the scent you smell from an unlit candle. Hot throw is the scent released when the candle is burning. Some fragrances have excellent cold throw but weak hot throw. The fragrance load and wax type both affect both qualities.

Should I add fragrance oil at a specific wax temperature?

Yes. Most waxes should have fragrance oil added at 180 to 185 degF (82 to 85 degC) for paraffin, or 155 to 165 degF (68 to 74 degC) for soy wax. Adding fragrance at too high a temperature can cause it to flash off (evaporate) before the candle sets. Always check your fragrance oil's flash point.

Sources

Reviewed by the CalculatorHub team, edited by James Graham, 14 June 2026. See our methodology.