Free calculator

How many can I make?

A candle cost and wax-per-jar calculator. Enter your jar size and the materials on your shelf to see how much wax and fragrance each candle uses, how many you can make, and what each one costs. Nothing is sent to our servers; the math runs in your browser.

Wax and fragrance per jar

Start with the volume to your fill line, then choose a wax type and fragrance load.

Common fill volumes

Fill volume Use the volume to the fill line, not necessarily the number printed on the jar. Number of candles

Wax type Typical published densities. Your supplier's wax may differ. Fragrance load (%) Most soy candles use 6–10%. This is fragrance weight divided by wax weight.

More options

Fill percentage (%) Leave at 100% if you already entered the volume to the fill line. Use a lower percentage if you entered the jar's full capacity and want to leave headspace. Waste allowance (%) Optional extra wax and fragrance for what stays in the pitcher, as a percent.

How fragrance is counted The usual method keeps fragrance load as a percent of wax weight, so the poured amount is slightly more than the wax alone.

Per candle

Wax

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Fragrance

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For the batch

12 candles

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How the math works

Fill volume is converted to milliliters (1 fluid ounce = 29.5735 ml) and multiplied by the fill percentage, then by the wax density to get wax weight. Fragrance load is a percentage of that wax weight, unless you choose the option that has wax and fragrance together fill the jar, in which case the fill weight is split so fragrance stays at the chosen load. A waste allowance, if you enter one, is added to both amounts. Results are shown in grams and avoirdupois ounces (1 ounce = 28.3495 g).

How many can you make?

Enter what is on your shelf. The calculator uses the wax and fragrance amounts above, plus the pieces each candle needs, and is limited by the material you will run out of first. Leave a material blank if you do not want it to be a constraint.

Wax on hand Fragrance on hand

Jars on hand Jars per candle

Wicks on hand Wicks per candle

Lids on hand Lids per candle

Labels on hand Labels per candle

Boxes on hand Boxes per candle

From what's on the shelf

You can make

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Add the amounts on your shelf to see how many you can make, and which material will run out first.

Cost per candle

Enter what you pay for each material. Amounts come from the wax-per-jar section above. Costs are in US dollars. Leave a price blank if you do not want it in the total.

Wax price Fragrance price

Jar Price each Wick Price each

Lid Price each Label Price each

Box or other packaging Price each

Materials cost

Per candle

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Batch of 12

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Add prices to see a cost per candle. This is materials only; it does not include your time, overhead, or selling price.

Waitlist

KeepBatch does this automatically, order by order

This calculator is a snapshot of what is on your shelf right now. KeepBatch is raw-materials inventory for makers who sell on Shopify: you set what each product uses once, and every order deducts those materials so you always know what you can make and what to reorder.