Free Candle Making Calculators
Choose the right calculator for your next candle-making step
Plan wax, fragrance, colour, wick testing, cooling, burn time and pricing with practical tools built around inputs you can actually measure or verify.
Wax, mold & batch planning
Start here when you need to determine capacity, wax quantity or the proportions of a wax blend.
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Candle Wax Calculator
Plan how much wax and fragrance to prepare for a candle batch from your container and batch inputs.
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Water-to-Wax Volume Converter
Measure a jar or mold with water and convert that measurement into a practical wax-capacity estimate.
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3D Candle Mold Wax Calculator
Estimate wax capacity for common 3D mold shapes from dimensions and a planning or supplier-tested wax density.
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Wax Blend Ratio Calculator
Split a total wax batch into component weights using the blend percentages you choose.
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Fragrance & color
Use these after you know the wax amount or have a supplier label, tested recipe or fragrance plan to work from.
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Candle Fragrance Load Calculator
Calculate fragrance oil from wax weight or a finished batch target, with separate wax-load and fragrance/IFRA limit checks.
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Candle Dye Calculator
Scale a supplier label or tested dye rate to the wax batch you are actually making.
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Fragrance Oil Blending Calculator
Balance top, middle and base-note proportions and turn your chosen blend percentages into usable amounts.
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Wick, pouring & testing
Use these tools for test starting points, temperature guidance, cooling plans and measured burn-test results.
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Candle Wick Size Estimator
Get practical wick starting candidates from candle diameter, wax type and test conditions, then confirm by burn testing.
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Candle Wax Melting & Pouring Temperature Guide
Compare general melting and pouring ranges by wax type, then follow the specifications for the wax you actually use.
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Candle Wax Cooling Time Estimator
Estimate a practical cooling or demold window from the candle, wax and conditions you enter.
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Candle Burn Time Calculator
Estimate total and remaining candle life from a measured burn test or a burn rate you already know.
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Pricing & business
Use your own material, labor and selling assumptions to understand cost, price and margin scenarios.
Choose a candle calculator from what you already know
The easiest starting point is the information you can measure now. You can move to the next calculator after that result is known.
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1
I do not know how much my jar or mold holds.
Measure capacity first, then use that result to plan the wax batch.
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2
I know the container or batch size and need wax.
Use the wax calculator for batch planning or the blend calculator when two waxes need to be split by ratio.
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3
I know my wax amount and need fragrance or dye.
Use supplier-supported fragrance guidance or scale a dye label / tested recipe to your actual batch.
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4
I am preparing, cooling or testing the finished candle.
Use temperature and cooling guidance during production, then wick and burn-test tools for the finished candle.
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5
I know my costs and need a pricing plan.
Enter your own material, labor and selling assumptions instead of relying on a universal markup rule.
Unit conversions should preserve the same amount rather than create a new estimate.
Some results depend on material properties or conditions and should be treated as planning values.
Wick or performance recommendations are candidates to test, not proof of final candle behavior.
Tools such as burn time can extrapolate from measurements you collect from the candle itself.
Candle making calculator FAQs
Quick guidance on choosing a tool, understanding estimates and knowing when supplier instructions or physical testing still matter.
Which candle calculator should I use first?
Start with the information you are missing. If you do not know how much a jar or mold holds, begin with the Water-to-Wax Volume Converter or 3D Candle Mold Wax Calculator. Once you know the capacity or wax amount, move to fragrance, dye, wick, testing or pricing tools as needed.
What is the difference between the Candle Wax Calculator and Water-to-Wax Volume Converter?
The Water-to-Wax Volume Converter is useful when you can measure the capacity of a jar or mold with water. The Candle Wax Calculator is for planning the wax and fragrance quantities for a candle batch once you have the required container or batch information.
When should I use the 3D Candle Mold Wax Calculator?
Use the 3D Candle Mold Wax Calculator when the mold can be represented by one of its supported geometric shapes and you know the inside dimensions. If the mold is highly irregular, a direct capacity measurement may be more practical.
Are candle calculator results exact?
It depends on the tool. Unit conversions and ratio arithmetic can be mathematically exact, while wax capacity, cooling time, wick selection and similar outputs may depend on material properties or real-world conditions. Each updated calculator should identify whether its result is a conversion, planning estimate, starting point or measured-test estimate.
Can the Wick Size Estimator guarantee the correct final wick?
No. The Candle Wick Size Estimator provides practical starting candidates. Wax, fragrance, dye, vessel geometry and other variables affect burn behavior, so the finished candle still needs supervised burn testing.
Should I follow the calculator or my wax and fragrance supplier?
Use supplier specifications whenever they provide a product-specific limit, temperature, ratio or tested instruction. A calculator can organize the arithmetic and planning, but it should not override reliable instructions for the exact wax, fragrance, dye, resin or other material you are using.
Can I use grams and ounces in the candle calculators?
Many of the calculators support grams and ounces, and updated tools are designed to preserve the same physical quantity when units are switched. The available units still depend on the specific calculator and the measurement being entered.
Are the Candles Molds calculators free to use?
Yes. The calculator pages on CandlesMolds.com are available to use without a paid calculator subscription or account sign-up. Use them for planning and testing, then follow the limitations shown on the individual tool.