1Quick Note Blend
Explore Top, Middle and Base proportions using parts or percentages. Presets are creative starting structures, not universal perfume rules.
Fragrance Oil Blending Calculator
Custom candle scent planning
Turn a fragrance idea into a repeatable blend by weight
Build a simple Top / Middle / Base structure or choose individual fragrance concepts, then scale the ratio into real production weights from a total fragrance amount or from wax weight and fragrance load.
2Individual Fragrances
Browse supplier-independent scent profiles or add your exact supplier fragrance, then calculate the weight of every oil in the recipe.
The calculator can calculate ratios and weights; it cannot predict scent throw, wax compatibility or product-specific compliance from a fragrance name. Check the current documentation for every exact oil and test the finished candle before scaling production.
Fragrance recipe builder
Build the ratio, then weigh every part of the blend
Use a simple note structure or individual fragrance profiles. The result stays focused on reproducible ratio math and production weights.
How would you like to build the blend?
1
Set the total fragrance amountStart with a fragrance total you already know, or derive it from wax weight and a fragrance load.
g
Combined fragrance weight to divide between the blend ingredients.g
Wax weight you plan to scent.Technical input range, not a recommendation. Check the load for your exact materials.
Optional: fragrance-load percentage basis
Use the basis stated by your recipe or supplier. Need to check wax and fragrance limits? Use the Candle Fragrance Load Calculator.
2
Choose a note structureEnter proportional parts or percentages. Top / Middle / Base is a creative planning framework, not a required formula.
Parts modeEnter any proportional ratio, such as 2 : 5 : 3. The calculator normalizes it to 100% automatically.
Top notes20%
First-impression role — often bright, fresh, green or aromatic.
Middle / Heart notes50%
Main-body role — often floral, fruity, spicy, tea or gourmand.
Base notes30%
Depth role — often woods, amber, vanilla, musk-style accords or resins.
Auto-balance20 : 50 : 30 → 20% / 50% / 30%.
2
Build with individual fragrancesAdd 2–6 oils. Built-in profiles are creative concepts; use a custom entry when you want to record an exact supplier product.
Parts modeUse any convenient ratio. The calculator auto-balances the math to 100% and shows each oil's normalized share.
The 240 built-in profiles are supplier-independent creative metadata. They do not provide product-specific IFRA limits, density, flashpoint, wax compatibility or throw predictions.
For repeatable production: add the exact fragrance product name and supplier when possible, then check the current documentation for each oil before testing the candle.
Choose at least two fragrances to build a named recipe.
0 fragrances · 0 partsAdd fragrances to calculate
Check these values:
Your calculated blend will appear hereEnter a valid ratio, or add at least two individual fragrances.
Total fragrance to divide
Input and answer are both shown in grams.
Blend recipeNormalized from parts
Planning note structureVisual organization only
Top
20%
Middle
50%
Base
30%
The bottle reflects the normalized Top / Middle / Base planning roles. It does not predict hot throw, cold throw or evaporation behavior.
Creative scent family profileFrom library metadata
Largest planning role: Middle — 50%This describes how the recipe is organized, not how the finished candle will throw scent.
Smallest ingredient: 10.00 gUse a scale that can resolve changes meaningfully smaller than the smallest amount you need to weigh, or increase the total trial blend.
How to calculate a candle fragrance blend by weight
The reliable part of fragrance blending is the ratio math: choose a total fragrance weight, normalize the recipe, then weigh each oil. Scent character and candle performance still need testing with the exact products you use.
Choose where the total fragrance amount comes from
Split an amount you already decided, or calculate it from wax weight and fragrance load.
If you already know the combined fragrance amount, enter it directly. If you know the wax weight and fragrance load, the calculator can derive the total fragrance first. Keep the percentage basis exactly as your source defines it.
Load based on wax weightTotal fragrance = wax weight × fragrance load
Load based on finished batchTotal fragrance = wax weight × load ÷ (1 − load)
Do not use the blending tool to invent a fragrance load. Check the exact wax and fragrance documentation first. For dedicated load and limit checks, use the Candle Fragrance Load Calculator.
Enter the blend as parts or percentages
Parts are convenient for experimenting because the calculator auto-balances any proportional ratio to 100%; percentage-style entry is useful when you prefer to think in percent values; either mode is normalized to a final 100% blend.
Normalize partsIngredient share = ingredient parts ÷ total parts
Convert to percentageIngredient % = ingredient share × 100
Weight each oilIngredient weight = total fragrance × ingredient share
Percentage auto-balanceFinal share = entered % value ÷ total entered % values
Worked example · quick note blend50 g total fragrance · 2 : 5 : 3 parts
The parts total 10. Top = 2/10, Middle = 5/10, Base = 3/10.
Auto-balance: 2 : 5 : 3 → 20% / 50% / 30%. Result: 10 g Top · 25 g Middle · 15 g Base = 50 g total fragrance.
Toggle behavior: switching from Parts to % shows the same physical recipe as normalized percentages. If you switch straight back without editing the percentages, the calculator restores the simple Parts ratio you entered. If you edit the percentage values, the calculator preserves their new proportions and auto-balances them to a final 100% composition.
Use Top, Middle and Base as planning roles—not a universal law
The note structure helps organize an idea, but it does not prove how the finished candle will smell or perform.
A commercial fragrance oil can already contain many aromatic materials and note layers. The six Quick Note Blend presets are therefore creative starting structures, not “correct” perfume pyramids. A top-forward, two-layer, base-heavy or evenly balanced blend can all be intentional.
No universal perfect ratio: the calculator reports the largest planning role mathematically, but it deliberately does not label a ratio “better,” “stronger,” or “ideal.” Evaluate the actual oils on blotters and in candle tests.
Use scent profiles for discovery; record exact supplier products for production
The built-in library helps search creative directions without pretending generic scent names are technical product data.
The 240 built-in profiles include creative family, secondary family, suggested planning role, tags and descriptive terms. They can help you find ideas such as citrus, woody, marine or gourmand. They do not provide a universal IFRA limit, density, flashpoint, wax compatibility or throw result.
- 1Explore a profile or enter your own product
Use the library for ideas; use “Add supplier fragrance” when you want a repeatable record of the exact oil.
- 2Record the supplier / brand when known
That makes later test records easier to reproduce when similar fragrance names exist across suppliers.
- 3Check technical documentation separately
Follow the current documentation for every exact fragrance and wax in the finished candle.
Scale an individual-oil recipe to production weights
Once the total fragrance and ratios are known, every oil is calculated from the same normalized recipe.
Worked example · individual fragrances500 g wax · 8% of wax weight = 40 g total fragrance
A 3 : 2 : 1 : 4 blend has 10 total parts, so the shares are 30%, 20%, 10% and 40%.
Result: 12 g · 8 g · 4 g · 16 g = 40 g total fragrance.
The calculator also identifies the smallest ingredient. If the smallest weight is too close to your scale's practical resolution, increase the total trial blend rather than pretending extra decimal places create accuracy.
Test the blend before treating it as a finished candle formula
Ratio math can be exact while scent quality and candle behavior remain product-specific.
A useful workflow is to make a small fragrance trial, compare the oils and blend on blotter strips, then prepare a small candle test with the exact wax, wick, dye and fragrance load you intend to use. Record the product names, lot or supplier details when useful, ratio, load, cure/evaluation timing and burn-test observations.
What this calculator proves: the normalized proportions and corresponding weights for the inputs you entered. What it does not prove: IFRA compliance, wax compatibility, hot throw, cold throw, wick suitability or finished-candle safety.
Fragrance oil blending FAQs
Answers to common questions about ratios, scent profiles, fragrance load, weighing and testing a custom candle scent.
How do I calculate a fragrance oil blend ratio?
Add the parts together, divide each ingredient's parts by the total, then multiply by 100 for its percentage. For a 2:5:3 blend, the total is 10 parts, so the normalized blend is 20%, 50% and 30%.
Should I enter parts or percentages?
Use Parts for ratios such as 2:5:3. Use % when you prefer percentage-style values. In either mode, the calculator proportionally auto-balances the entries to a final 100% blend and shows the normalized shares.
Is 20% Top, 50% Middle and 30% Base the best fragrance ratio?
No. It is one creative starting structure, not a universal best ratio. The Top / Middle / Base framework helps organize an idea, while the actual scent character and candle performance depend on the exact fragrance oils and formula you test.
Do fragrance blends need Top, Middle and Base notes?
No. A two-layer, top-forward, heart-forward, base-heavy or evenly distributed recipe can be intentional. A finished fragrance oil may already contain multiple note layers, so the planning role you assign here does not describe all of its chemistry.
What is the difference between Quick Note Blend and Individual Fragrances?
Quick Note Blend divides the total fragrance into Top, Middle and Base planning roles. Individual Fragrances calculates weights for 2–6 named oils and can record exact supplier products for a more reproducible recipe.
Are the 240 scent profiles actual supplier fragrance oils?
No. They are supplier-independent creative profiles for search and planning. Their family, tags and suggested role do not provide product-specific IFRA limits, density, flashpoint, wax compatibility or throw performance. Use Add supplier fragrance to record the exact product you bought.
Can I blend fragrance oils from different suppliers?
The calculator can mathematically combine any named oils. For the actual candle, confirm that every exact product is intended for your application and check its current supplier documentation. Recording the supplier / brand in the calculator helps make the recipe easier to reproduce.
Does this calculator check IFRA limits for a fragrance blend?
No. Generic scent names do not contain the composition data needed to prove a combined blend's compliance. Use the current documentation for the exact fragrance oils, and use the Candle Fragrance Load Calculator for fragrance-load and entered-limit math. That still does not replace product-specific compliance review.
How is fragrance load different from the blend ratio?
Blend ratio describes how the fragrance portion is divided between oils. Fragrance load describes how much total fragrance is used relative to wax or the finished batch, depending on the stated basis. They are separate calculations.
Should I measure fragrance oils in grams, ounces, pounds, mL or drops?
For a repeatable blend recipe, weighing is generally more reproducible than assuming volume or drop size. This calculator supports grams, weight ounces and pounds. It does not convert mL or drops to weight without a known product-specific relationship.
Can I enter grams and get the result in ounces or pounds?
Yes. Input weight and Answer in are independent. Switching units preserves the same underlying physical quantity; it does not reinterpret a rounded display number as a new measurement.
Why does the calculator show the smallest ingredient?
A mathematically correct ratio can still be impractical to weigh in a tiny trial. The smallest-ingredient note helps you decide whether to use a more suitable scale or increase the total test blend instead of relying on meaningless extra decimals.
How many fragrance oils can I blend together?
There is no universal required number. Individual Fragrances supports 2–6 oils so the formula stays readable and practical to weigh. More ingredients do not automatically make a better fragrance.
How should I test a new candle fragrance blend?
Start with a small fragrance trial, compare the components and blend on blotter strips, then make a small candle test using the exact wax, wick, fragrance load and other materials you intend to use. Record the formula and repeat controlled burn testing before scaling production.
Turn the fragrance blend into a tested candle formula
Check the total fragrance load, plan wax and wick choices, add colour if needed, price the finished candle and validate performance with burn testing.