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Candle Wax Calculator — Free Online Tool
Estimate the wax and fragrance oil weights needed for container candles using fill volume, number of jars, finished-mixture density, fragrance load and extra production material.
Interactive calculator requires JavaScript. Formulas, examples and FAQs are available below.
How to use Candle Wax Calculator
Estimate the wax and fragrance oil weights needed for container candles using fill volume, number of jars, finished-mixture density, fragrance load and extra production material.
- Measure usable jar fill volume (in mL or US fluid ounces).
- Select the number of candles and a realistic finished-mixture density.
- Enter fragrance load as a percentage of wax weight, based on product specifications.
- Weigh the calculated wax and fragrance in grams or weight ounces.
Important: Follow wax and fragrance manufacturer limits, testing and safe candle-making procedures.
Formula and methodology
Estimated blended mass = volume × finished-mixture density × (1 + extra%). Wax mass = blended mass ÷ (1 + fragrance load fraction); fragrance mass = blended mass − wax mass.
The interactive calculations depend on the inputs, units and assumptions you provide. Display values are rounded for readability, but calculations use unrounded input values where applicable.
Worked example
If the intended finished blend weighs 200 g and fragrance load is 10% of wax weight, wax is 200 ÷ 1.10 = 181.82 g and fragrance is 18.18 g. Fragrance percentage is based on wax mass, not total blend.
Try entering your own measurements above to reproduce this calculation and understand each result.
Frequently asked questions
Does 8% fragrance load mean 8% of total candle weight?
Here it means fragrance oil equal to 8% of the wax mass, the convention commonly used in candle formulas.
Can I use fluid ounces to weigh wax?
No. Fluid ounces measure volume. Wax and fragrance should be weighed; density converts volume to estimated mass.
Why can the weight differ between waxes?
Different wax blends and additives have different densities and recommended maximum fragrance loads.