PourMath
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Candle math, done for you

Free calculators and plain guides for people who pour candles: wax, fragrance, wicks and what to charge.

Why weigh, not guess

Most first candles fail on arithmetic, not craft: too little wax for the last jar, fragrance measured by eye, a price that doesn't cover the jar. The calculator above does the arithmetic the way wax suppliers state it, and the guides below explain each number so you can check it yourself.

Latest guides

"Fragrance load explained: what 6%, 8% and 10% really mean"

How fragrance load is calculated, why more isn't always stronger, and how to stay under your wax's maximum.

Updated 2026-10-19

How much wax do I need for a candle jar?

Turn a jar's water capacity into the wax weight you actually melt, with worked examples for 4, 8 and 12 oz jars.

Updated 2026-10-19

"Pricing handmade candles: a worksheet that covers every cost"

Materials, your time, fees and a margin - the four lines a candle price has to cover, with a worked example.

Updated 2026-10-19