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9 free tools in one — the most complete candle making calculator on the web. No signup, instant results.
Percentages shown are safe maximums for your wax type — exceeding them causes seeping or poor burn.
🧵 Recommended wick sizes
Add fragrance at
—°F
Pour into jar at
—°F
Maker's notes
Measurements are estimates based on industry-standard formulas.
Wick sizing varies by fragrance oil density, colorant, and jar shape — always test burn before your full batch.
Fragrance oil max load varies by brand; check your supplier's specs.
Estimate how many hours your finished candle will burn based on wax weight and wax type.
Multiple wicks burn wax faster — a double-wick candle won't last twice as long as a single-wick one of the same size.
Enter your material costs, labor, and overhead to get suggested retail, Etsy, wholesale, and craft fair prices with profit margins.
Calculate fragrance oil amounts for wax melts, clamshells, and tarts. Wax melts can hold significantly more fragrance than container candles — up to 15%.
Calculate how much candle dye or colorant to add for consistent color results every batch. Works for liquid dye, dye blocks, and dye chips.
Always start with less dye than you think you need — add more gradually. The color appears darker in liquid wax and lighter once fully set. Test a small pour first.
How long before you can safely move, trim, or package your candles. Moving too early causes sinkholes and shifted wicks. Moving too late in a cold room causes wet spots and cracking.
Build a custom parasoy, cocosoy, or any multi-wax blend. Enter your total batch weight and the percentage of each wax — get exact ounces of each to weigh out.
Create a custom scent blend like a perfumer — balance top notes (first impression), middle notes (the heart), and base notes (lasting depth). Enter your total fragrance oil amount and how much of each note to use.
🌿 Top note — first impression, fades quickest
🌸 Middle note — the heart of the scent
🌲 Base note — lasting depth, fades last
Calculate exact amounts of fragrance oil and carrier (alcohol or distilled water) for room sprays and linen mists. Room sprays use more fragrance than candles — typically 5–15% load.
Find out how many candles you need to sell each month to cover your fixed costs — and when your candle business becomes profitable.
About this tool
Whether you're a beginner making your first soy candle or a small business calculating fragrance load for a production batch, getting the measurements right is everything. Too little fragrance oil and your candle has no scent throw. Too much and the wax sweats, the wick clogs, and the candle burns dangerously. Our free candle wax and fragrance calculator uses the same industry-standard formulas trusted by professional candle makers — the 0.86 fill factor, wax-specific maximum fragrance load percentages, and CD/ECO wick sizing charts by jar diameter.
Wax amount
We multiply your container capacity by 0.86 — the standard specific gravity factor — to get exact wax weight in oz or grams.
Fragrance load
Fragrance oil is calculated as a safe percentage of wax weight, with safe max limits per wax type built into the formula.
Wick sizing
Wick recommendations use CD and ECO series charts cross-referenced by jar diameter — the most widely used sizing system.
Batch scaling
Set any quantity from 1 to 100 candles and the calculator scales every measurement proportionally for your full batch.
Reference guide
Every wax has a maximum fragrance load it can safely bind. Exceeding these limits leads to seeping, poor burn quality, and potential fire hazards. These are the industry-accepted ranges used by suppliers like CandleScience, Flaming Candle, and Brambleberry.
| Wax type | Light throw | Medium throw | Max load | Best for |
|---|---|---|---|---|
| Soy (container) | 5% | 7% | 10% | Beginners, eco candles |
| Paraffin | 8% | 10% | 12% | Strong hot throw, votives |
| Beeswax | 3% | 4% | 6% | Natural, unscented or light scent |
| Coconut wax | 6% | 8% | 10% | Luxury candles, slow burn |
| Soy/paraffin blend | 6% | 8% | 10% | Balance of throw and clean burn |
Common questions
The standard fragrance load is 6–10% by weight. For 1 pound (16 oz) of soy wax, that's 0.96–1.6 oz of fragrance oil. Paraffin can hold up to 12%, while beeswax maxes at around 6%. Never exceed your wax manufacturer's recommended limit — too much fragrance causes sweating and wick clogging. Use the calculator above for exact amounts based on your container size.
The formula is: Container capacity (oz) × 0.86 = wax weight needed. The 0.86 factor accounts for headspace at the top and the space taken up by the wick. So an 8 oz jar needs about 6.9 oz of wax. For grams, multiply milliliters by the wax's specific gravity (0.86 for most soy waxes). Our candle wax calculator does this automatically.
Wick size depends primarily on your jar's inside diameter. For a 2–2.5 inch soy candle container, start with a CD-14 or CD-16 wick. For 3–3.5 inches, try CD-20 to CD-22. Jars wider than 3.5 inches usually need double wicking. Always test 2–3 wick sizes — the right wick creates a full melt pool within 3–4 hours without smoking or a flame larger than 1 inch.
Add fragrance oil to soy wax when it cools to 130–140°F (54–60°C). Adding above 185°F causes the fragrance to flash off before it can bind. Stir gently for 2 minutes, then pour your candle at around 120–130°F. Coconut wax has a much lower working temperature — add fragrance at 105–115°F and pour at 100–110°F.
Weak scent throw is almost always caused by one of three things: (1) Not enough cure time — soy candles need 1–2 weeks for fragrance to fully bind with wax. (2) Wick too small — a small wick can't create a full melt pool, so fragrance doesn't release. (3) Fragrance added too hot — the scent evaporates before it can bind. Test your fragrance load, wick size, and pour temperature systematically before changing multiple variables at once.
Soy candles need a minimum of 48 hours before the first burn, but 1–2 weeks gives the best scent throw as the fragrance oil fully bonds with the wax. Coconut wax benefits from up to 2 weeks of curing. Paraffin candles cure faster and are typically ready in 24–48 hours. Never judge your candle's scent performance before it has cured.
Cold throw is the scent you smell when the candle is unlit — how the fragrance smells just from the wax. Hot throw is the scent released while the candle is burning. Soy wax typically has excellent cold throw but moderate hot throw. Paraffin is known for strong hot throw. A candle that smells great cold but weak when burning usually has a wick that's too small to create a proper melt pool.
Yes, but essential oils behave differently than fragrance oils in candles. Most essential oils have a lower flash point and can evaporate at candle-making temperatures, resulting in weak scent throw. Use candle-safe essential oils and add them at the lowest safe temperature. Citrus essential oils are especially volatile. For best results, use fragrance oils specifically formulated for candle making — they're designed to bind with wax and withstand burning temperatures.
Multiply your wax weight (oz) by the burn rate for your wax: beeswax ~7 hrs/oz, coconut ~6.5 hrs/oz, soy ~6 hrs/oz, blends ~5.5 hrs/oz, paraffin ~4.5 hrs/oz. A double-wick candle burns roughly 15% faster than single-wick. Always trim your wick to ¼ inch before each burn — a long wick significantly shortens burn time. Use our burn time calculator above for a low/high estimate range.
Use this formula: Retail = Total COGS ÷ (1 − margin %). Your COGS must include all materials, labor (don't skip this — a 20-minute candle at $15/hr adds $5), and overhead. Target 50–65% gross margin for a sustainable candle business. For Etsy, add 10% on top to cover platform fees. Our candle pricing calculator above gives you retail, Etsy, wholesale, and craft fair prices instantly.
Wax melts can hold more fragrance than container candles — typically 8–12% for soy and parasoy, up to 15% for paraffin melts. Since there's no wick to clog, the wax is melted by an external warmer and you can push the fragrance load higher. Add fragrance around 140–150°F and let wax melts cure 48 hours before packaging for best scent throw.
For liquid dye, start with 1–2 drops per pound for a pastel and up to 6 drops for vibrant color. Dye blocks and chips are more concentrated — roughly 0.003–0.02 oz per oz of wax. Always add dye incrementally and test a small pour first. Wax looks 2–3 shades darker in its liquid state than when fully set — account for this or your batch will come out lighter than expected.
For candle bloggers & educators
Running a candle making blog or teaching a candle making course? Embed our full 10-tool calculator suite on your site for free. Your readers get an instant, professional tool — no coding skills required.
Copy this code and paste it into your blog post or page:
<iframe src="https://candlemakingcalculator.com/" width="100%" height="800" frameborder="0" style="border-radius:12px;border:1px solid #2e2310;" title="Free Candle Making Calculator"></iframe>
Quick answers
How do I calculate how much wax I need for a candle?
Multiply your container's liquid capacity in ounces by 0.86 to get the wax weight needed. The 0.86 factor accounts for the density difference between liquid and solid wax, plus headspace and wick allowance. A standard 8 oz mason jar needs approximately 6.9 oz of wax. For grams, multiply milliliters by 0.86. This formula works for all container candle waxes including soy, paraffin, and coconut. Use our free wax calculator above to get instant results for any container size.
What percentage of fragrance oil should I use in soy candles?
For soy container candles, use 6–10% fragrance oil by wax weight. A 6% load gives a lighter scent, 7–8% is the most common choice for medium throw, and 10% is the maximum safe load. Exceeding 10% in soy wax causes the excess oil to seep out of the finished candle and can clog the wick. To calculate your amount: multiply your wax weight in ounces by your chosen percentage. For 16 oz of soy wax at 8%, you need 1.28 oz of fragrance oil.
How do I choose the right wick size for my candle?
Wick size is determined primarily by your container's inside diameter. For a 2–2.5 inch jar, start with a CD-14 to CD-16 wick. For 3–3.5 inches, try CD-20 to CD-22. Jars wider than 3.5 inches typically need double wicking. The correct wick creates a full melt pool reaching edge-to-edge within 3–4 hours without producing a flame taller than one inch or mushrooming at the tip. Always test at least 2–3 wick sizes before committing to a full production batch.
How long does it take for soy candles to cure?
Soy candles should cure for a minimum of 48 hours before burning, but the ideal cure time is 1–2 weeks for the best scent throw. During curing, the fragrance oil fully bonds with the wax crystal structure. Testing a soy candle at 48 hours gives a misleadingly weak cold and hot throw — the same candle tested at 14 days can smell significantly stronger. Paraffin cures in 2–3 days, beeswax and coconut wax in 7–10 days. Never judge a candle's performance before its recommended cure time.
How do you price candles to make a profit?
The standard candle pricing formula is: Retail price = Total COGS ÷ (1 − target margin %). Your COGS must include all materials (wax, fragrance, jar, wick, label), labor time at your chosen hourly rate, and overhead costs. Most profitable candle businesses target 50–65% gross margin. For Etsy, add approximately 10% to your retail price to cover platform and payment processing fees. The most common pricing mistake is leaving out labor — a 20-minute candle at $15/hour adds $5 to your true cost of goods.
Related searches
Free guides
In-depth articles to help you make better candles every batch.
Fragrance guide
Safe fragrance load percentages for every wax type, the exact formula to use, and why too much fragrance actually makes scent throw worse.
Read the guide →Wax comparison
A complete comparison of every major candle wax — scent throw, burn time, difficulty, and cost — to help you choose the right one for your goals.
Read the guide →Beginner's guide
Everything you need for your first batch — supplies, measurements, step-by-step instructions, and the 6 mistakes that trip up nearly every beginner.
Read the guide →