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Candle wax & fragrance calculator

Calculate wax and fragrance masses for a known wax batch or a chosen net fill weight per candle. Select which mass the fragrance percentage uses.

Calculate by weight

Enter the mass of wax and fragrance per candle. Leave out the container, lid and wick.

Whole number from 1 to 10,000.

Fragrance is this percentage of wax mass. Changing the basis keeps the typed number but changes its meaning.

Enter your own percentage; no concentration is recommended.

Scales the whole mixture; it does not add candles.

Use mass, not fluid volume. Enter dot or comma decimals, up to six places.

Amounts to weigh

Enter values to see the result.

Follow your specific wax and fragrance suppliers’ instructions and test the finished formulation. This calculation does not establish safety, compatibility, scent strength or burn performance.

Inputs are calculated locally in this browser; other page services may make ordinary requests.

How to use this calculator

  1. Choose I have wax for a known wax batch, or Plan candles for a known net mixture mass per candle.
  2. Enter the fragrance percentage and choose whether it is relative to wax or the finished mixture.
  3. For planned candles, enter the whole candle count and any extra batch allowance. Review the nominal and adjusted ingredient masses.

What the calculator includes

  • Two distinct fragrance-percentage definitions with a labeled equivalent.
  • Calculations in grams, kilograms, weight ounces and pounds.
  • A known-wax workflow and a per-candle planning workflow.
  • An optional allowance that scales both ingredients while preserving their ratio.

Worked examples

  • At 500 g wax and 8% of wax, add 40 g fragrance for 540 g total.
  • At the same 500 g wax and 8% of finished mixture, add about 43.48 g fragrance for about 543.48 g total.
  • For ten candles at 220 g each and 10% of wax, use 2,000 g wax and 200 g fragrance. A 5% batch allowance changes the mix to 2,100 g wax and 210 g fragrance.

Formulas and practical limits

For wax basis, fragrance = wax × percentage ÷ 100. For finished-mixture basis with known wax, fragrance = wax × percentage ÷ (100 − percentage).

For a known target mixture, wax basis gives wax = target ÷ (1 + percentage ÷ 100); mixture basis gives fragrance = target × percentage ÷ 100. The other ingredient is the remainder.

The target is a known net mass of wax and fragrance, excluding the container, lid and wick. Jar labels, water fills and fluid ounces do not supply this mass automatically. Weigh ingredients with a suitable scale and tare the measuring vessel.

The allowance multiplies both wax and fragrance after the nominal candle batch is calculated. It does not change the planned candle count or add percentage points to fragrance.

These formulas also split a wax-melt batch by mass. They do not choose compatible ingredients, approve a fragrance load, predict physical fill or replace finished-product testing.

Privacy and scope

Only current inputs are processed in the browser calculator; ordinary page services may still make network requests. Independently rounded display values can differ slightly in their sum.

Follow your specific wax and fragrance suppliers’ instructions and test the finished formulation. This calculation does not establish safety, compatibility, scent strength or burn performance.

Questions about wax and fragrance

Both conventions exist. Choose the basis used by your supplier or recipe; the same number produces different amounts under the two definitions.

Use I have wax. Enter its mass and the fragrance percentage; this mode does not multiply by candle count or add allowance.

No. oz here means weight ounces, not fluid ounces. The calculator uses mass only.

A jar label does not establish the net mass of your wax-and-fragrance mixture. Measure the intended fill independently.

Yes. At 0%, fragrance is zero and the mixture is all wax. In planning mode, any batch allowance still scales the wax.

No. It scales both ingredients for the same planned count and shows the extra mixture separately.

Each displayed amount is rounded independently. The calculator uses unrounded amounts for its batch calculations.

Yes, for a known target mixture mass or known wax mass. The calculator does not assess ingredient suitability or product safety.

Sources and weighing guidance

Supplier guidance for weighing and a comparison of percentage definitions. These links do not validate a formulation.

More useful tools are on the way.

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