About PourMath

PourMath is a small reference site for home and small-batch candle makers, run by BlackHeaven Inc. - the same family business behind the D&M candle shop. We built the calculator because we kept doing the same arithmetic on scraps of paper. Everything here is free to use.

PourMath gives practical making and pricing help. It does not give fire-safety certification or legal advice: follow your wax, wick and fragrance suppliers' instructions and the labelling rules where you sell.

How this site is made

The guides here were written for this site by BlackHeaven Inc. Some newer articles are drafted with AI help; those are marked on the page, and they only appear after passing automatic checks for length, originality against our other pages, and claims we won't make. Numbers that change (fees, platform limits, prices) carry the date they were checked - please confirm them at the source before you rely on them. Spotted a mistake? Tell us at jarvis.blackheaveninc.app.

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This site is paid for by ads. Ads from other businesses are labelled Sponsored; ads for BlackHeaven's own products are labelled From BlackHeaven. Advertisers never pay for, write or approve our articles.