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Category 1 β Lip & possible ingestion
Example products: Lip balm, lipstick, mouth-contact toys
Fragrance Oil Calculator
Fragrance Oil Calculator
Use our fragrance oil calculator to determine how much fragrance oil you need β and how much it will cost. Whether you're formulating perfumes, candles, soaps, laundry detergent, or any other scented product, simply enter your container size, desired fragrance percentage, and number of units. Optionally, enter your cost per pound to estimate fragrance oil cost per unit and total.
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Calculate Your Fragrance Load & Cost
Measure fragrance load and cost for any product and production run.
Accurately Measure How Much Fragrance Oil You Need
Enter your container size, fragrance percentage, and number of units. The calculator displays per-unit and total fragrance requirements in ounces, milliliters, pounds, and kilograms. Optionally, add your Cost per Pound to estimate cost per unit and total cost.
Results will appear here
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Fragrance Load Ranges by IFRA Category
General dosage ranges by product category.
Always confirm dosage using IFRA documentation. The ranges below are general starting points, please refer to IFRA documentation posted on each fragrance page (in the DOCUMENTATION tab directly below the main image) for the maximum recommended usage rate by product category. Need a document that isn't on the product page? Use our Documentation Request form.
Not sure how to proceed? Book a consultation
How we use IFRA 51
All Stock Fragrance formulations are IFRA compliant. IFRA β the International Fragrance Association β is the global governing body for fragrance safety; its Standards set maximum recommended usage levels for fragrance materials based on ingredient composition, product type, and how a product is realistically used. We currently formulate to the IFRA 51st Amendment (announced June 30, 2023).
IFRA limits are determined by the total level of allergens in the formula and the amount of skin contact. Because every limit is formula-specific, mixing or modifying an oil voids our documentation. IFRA documentation is posted on every fragrance page and can be viewed or downloaded. Outside of IFRA, your final dosage comes down to your preference and how much fragrance your base or product can hold. When a product could fit more than one category, use the most restrictive. For the full breakdown of all 12 IFRA categories and how to apply them, read our Understanding the IFRA 51st Amendment guide.
Category 2 β Underarm (axillae), leave-on
Example products: Deodorant, antiperspirant, body spray
Category 3 β Applied to the face by hand
Example products: Eye cream, facial makeup, makeup remover
Category 4 β Fine fragrance
Example products: Perfume, cologne, aftershave
Category 5Aβ5D β Leave-on body, face, hand & baby
Example products: Body lotion, face cream, hand cream, baby lotion
Category 6 β Oral & peri-oral (rinse-off)
Example products: Toothpaste, mouthwash, breath spray
Category 7A / 7B β Hair, rinse-off & leave-on
Example products: Shampoo, conditioner, hairspray
Category 8 β Significant anogenital exposure
Example products: Intimate wipes, feminine sprays
Category 9 β Rinse-off body & hand
Example products: Soap, body wash, shower gel, hand soap
Category 10A / 10B β Household & fabric care; aerosols
Example products: Reed diffusers, fabric & air sprays, cleaners, laundry
Category 11A / 11B β Minimal skin transfer (no UV / with UV)
Example products: Scented paper, pillow sprays
Category 12 β Non-skin contact
Example products: Candles, incense, dry-air devices
Typical dosages are general starting points; your working rate depends on the base, scent-throw target, and the oil's IFRA Category maximum in its RDS.
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Ordering Guidance
Plan your supply so production never waits on fragrance.
Our general rule of thumb is to order at least a 6-month supply of fragrance oil and place re-orders 4β6 weeks before running out. For orders over 50 lbs, we'll typically run a production batch just for your order. Standard production lead time is 10β14 business days. Summer (MayβSeptember) is the busiest time for oil production, so you may see longer lead times then.
Standard shelf life is 12 months from production, though oils typically last much longer when stored properly β see our blog on oxidation & storage and getting the most out of your fragrance oils.
Planning a larger run? Browse bulk fragrance oils, or explore custom fragrance design if you need a formula tailored to your product.
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Frequently Asked Questions
Quick answers to the questions buyers ask most often.
How much fragrance oil should I use for candles or soap?
The ideal dosage varies by product. Use our calculator as a guide and always refer to IFRA standards for safe usage limits. Candle dosages typically range between 6β10%, while soaps and body products often use lower percentages.
What if my fragrance oil load exceeds the IFRA limit?
Always stay within IFRA limits. If your scent strength needs improvement, consider adjusting your base formulation or contact us to customize your fragrance for better performance at lower dosages.
Do you offer non-toxic and clean formulations?
Yes β all our fragrance oils are non-toxic, cruelty-free, vegan, and GMO-free. They are made in the USA and meet clean beauty standards.
How does the calculator estimate cost?
Enter your oil's price per pound and the calculator shows what the fragrance will cost β per item and for the whole batch. Leave it blank to just see how much oil you need.
Can you use too much fragrance oil?
Yes. Overloading can cause stability issues and make products unsafe. This calculator is only meant to determine how much fragrance oil is needed for production.
Can I mix or blend your fragrance oils myself?
All of our fragrances are finished blends and not meant to be mixed or altered. Blending oils will void all safety and regulatory documentation, as these are formula-specific.
Should I measure fragrance oil by weight or by volume?
Typically by weight, since the density of oils can vary.
How much fragrance oil do I need for a full production run?
Total oil needed is based on dosage, container size, and number of units β and don't forget a little extra for waste.
Should I test a fragrance oil before scaling to a full batch?
Yes. Testing is always necessary and an essential part of production for final product performance, evaluation, and stability.
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Resources & Reading
Everything you need to plan, document, and source your fragrance.
Fragrance Oil Knowledge Center Fragrant Thoughts blog Request Documentation Custom Fragrance Design Sample Sets Discovery Set Bulk Fragrance Oils
What Is IFRA?
How the International Fragrance Association sets global safety standards, what the 51st Amendment means, and why it matters for your product.
How to Choose the Right Fragrance Oil
Matching fragrance oils to product type β candles, soap, perfume, body care, home. What changes when the base changes.
How to Read SDS & IFRA Documents
A walkthrough of the documents on every fragrance oil β what each section means and how to use them in your formulation.