Candle Wax Calculator

Multiply the container volume in fluid ounces by your fill percent, then by the wax density factor (about 0.86 for soy). An 8 oz jar at 90% fill in soy works out to 8 times 0.9 times 0.86, which is 6.192 oz of wax.

Volume is measured in fluid ounces but wax is bought by weight, and melted wax is lighter than the same volume of water. The tool applies a density factor between 0.86 and 0.92 to turn usable volume into the weight of solid wax you need.

Soy is 0.86, paraffin and coconut are both 0.9, and beeswax is 0.92 ounces of wax per fluid ounce of container. Beeswax is the densest of the four, so the same jar needs a little more of it by weight.

Around 90 percent is typical so the melt pool and wick clip do not spill over the rim. The tool defaults to 90, but you can lower it for a deeper headspace or raise it toward 100 for a jar filled to the top.

No. The figure is wax only. Fragrance is dosed as a percent of the wax weight, so size the wax first with this tool, then calculate the fragrance load separately from the wax total it gives you.

It shows wax per candle in ounces plus the batch total in ounces, pounds and grams at once. That makes it easy whether your wax is bagged in pounds or your scale reads in grams.

Pick the closest match by density. Most container blends sit between 0.86 and 0.92, so choosing soy or paraffin gives a close estimate. Treat the number as a buying guide and keep a little extra on hand.

They are close estimates. Real yield shifts slightly with pour temperature, additives and how tightly you fill, so round up when ordering. The math is deterministic, so the same inputs always give the same weights.

Yes. The calculation happens in your browser and nothing is uploaded, so your recipe and quantities stay on your own device.