Craft Calculators
Candles

Candle Wax & Fragrance Load Calculator

Estimate wax and fragrance oil amounts for container candle batches.

Useful for candle makers planning small batches, test pours, gifts, or craft-market inventory.

Free calculator Defaults are prefilled so the estimate appears immediately.
Choose a starting density, then replace it with a measured or supplier value when available.

Your Estimate

6.88 oz

Wax per candle 6.88 oz
Batch wax 41.28 oz (1170.27 g)
Fragrance oil 3.3 oz total

Formula Used

wax weight = container volume x wax density; fragrance = wax weight x fragrance load

This estimate converts container volume to wax weight with the editable density, then applies fragrance as a percentage of wax weight. It does not determine wick size, supplier limits, hot throw, or whether a finished candle will burn safely.

Editable Assumptions

These defaults are starting points. Use the linked inputs to replace them with values for your materials and process.

  • Wax density — default 0.86 oz/fl oz: The 0.86 oz/fl oz default is a planning value for soy container wax. Vessel fill lines, wax blends, and temperature change the actual weight, so use a measured fill weight when available.
  • Fragrance load — default 8%: The 8% default is a common planning starting point, not a safe maximum. Use the lower limit specified for your exact wax and fragrance oil, then confirm performance with burn tests.
Fixed conversions and presets
  • Soy wax density (0.86): Planning estimate for ounces by weight per fluid ounce of container volume.
  • Paraffin wax density (0.9): Planning estimate for paraffin wax weight by container volume.
  • Coconut wax density (0.84): Planning estimate for softer coconut wax blends.
  • Beeswax density (0.96): Beeswax is denser than many container waxes, so the weight estimate is higher.
  • Percent divisor (100): Converts a user-entered percent into a decimal multiplier.
Use in batch cost

What is candle wax & fragrance load calculator?

A candle wax calculator estimates how much wax and fragrance oil to prepare for a batch. Container volume is not the same as wax weight, so the calculator applies a density estimate before calculating fragrance load.

How to use this calculator

  1. Enter filled container volume.
  2. Choose a wax density preset, then edit the density if you have a measured fill weight.
  3. Enter the fragrance load recommended for your wax and oil.
  4. Enter the number of candles in the batch.

How is it calculated?

Formula

wax weight = container volume x wax density; fragrance = wax weight x fragrance load

What The Constants Mean

  • Soy wax density (0.86): Planning estimate for ounces by weight per fluid ounce of container volume.
  • Paraffin wax density (0.9): Planning estimate for paraffin wax weight by container volume.
  • Coconut wax density (0.84): Planning estimate for softer coconut wax blends.
  • Beeswax density (0.96): Beeswax is denser than many container waxes, so the weight estimate is higher.
  • Percent divisor (100): Converts a user-entered percent into a decimal multiplier.

Six 8 fl oz soy candles at 8% fragrance load need about 41.28 oz wax and 3.3 oz fragrance oil.

Common mistakes

Do not assume every 8 fl oz jar holds 8 oz of wax by weight. Fragrance load limits depend on wax, fragrance oil, wick, vessel, and testing.

FAQ

Is fragrance load based on wax weight?

Yes. Fragrance oil is commonly calculated as a percentage of wax weight.

Can I use any fragrance percentage?

No. Follow the wax and fragrance supplier's tested limits.

Does wick size come from this calculator?

No. Wick sizing requires burn testing with your vessel, wax, and fragrance.

Why is wax density estimated?

Different waxes and temperatures vary, so this is a planning estimate.

Sources

Last reviewed:

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