Candle Making Calculator

Candle Making Calculator gives you exact wax and fragrance weights for every pour, whether you are making one jar or a whole batch.

Tap a common jar size to start, or weigh yours with water for exact numbers. Set your fragrance load and the app works out the wax and the oil in grams or ounces. The numbers always add up to the total, so what you weigh is what goes in the jar.

POUR MODE
Big, clear weights one step at a time, easy to read with wax on your hands.

SOAP CALCULATOR (COLD PROCESS)
Pick your oils, set your superfat and lye concentration, and get the lye and water to the tenth of a gram, for bar soap (NaOH) or liquid soap (KOH). See how the lye adds up, check the bar's hardness and cleansing, and read the safety steps before you mix. Lye amounts come from published tables. Always check your numbers with a second calculator before your first batch.

WHAT EACH CANDLE COSTS
Add what you paid for wax, oil and jars, and see the cost of each candle. Free.

PRO, PAID ONCE
One purchase. No subscription. No account.
- What to charge, and what you keep after platform fees
- Supplies on hand: how many candles your wax and oil will make
- Unlimited recipes and waxes (free keeps one recipe)
- Fragrance blends, weighed oil by oil
- Burn tests: log melt pool, flame height, tunneling and soot hour by hour, with a photo
- Wick trials: test several wicks side by side on the same recipe
- Soap: all bar quality numbers, scale to your mold, cost per bar, unlimited soap recipes

PRIVATE BY DESIGN
No account and no sign-in. Your recipes, costs and photos stay on your phone. No ads and no tracking.

A NOTE ON WICKS
The app never picks a wick size for you. Wax, jar, fragrance and dye all change how a wick burns, so a burn test is how you find out. Burn tests and wick trials help you judge the wick you chose. Always follow your supplier's guidance and never leave a burning candle unattended.

Questions or ideas: https://candlecalc-cbs.vercel.app/support.html