Creating your own perfumes, colognes, or scented products involves carefully diluting concentrated fragrance oils. This ensures a safe and pleasant scent profile, preventing skin irritation and achieving the desired strength of aroma. The Fragrance Oil Dilution Calculator helps you precisely measure the amount of fragrance oil needed when blending with a carrier oil (like jojoba, almond, or fractionated coconut oil).
The Math Behind the Calculator
The calculation is based on simple percentage principles. You want to achieve a certain percentage of fragrance oil in your final blend. If you know the total volume of your carrier oil and your desired fragrance percentage, you can calculate the exact amount of pure fragrance oil required.
Carrier Oil Amount (ml): This is the volume of your base oil (e.g., 50ml).
Desired Fragrance %: This is the concentration of fragrance oil you want in your final product (e.g., 5% for a light scent, 10% for a stronger one). It's crucial to research recommended usage rates for different product types and fragrance sensitivities.
100% - Desired Fragrance %: This represents the percentage of the carrier oil in your final blend. For example, if you want 5% fragrance, the carrier oil will make up 95% of the total volume.
Essentially, we are finding out what volume of pure fragrance oil corresponds to the 'Desired Fragrance %' within the total volume of the mixture, where the carrier oil makes up the remaining percentage.
How to Use the Calculator
Enter Carrier Oil Amount: Input the total volume of your carrier oil in milliliters (ml) that you intend to use for your blend.
Enter Desired Fragrance Percentage: Specify the final concentration of fragrance oil you want in your mixture. Common percentages for eau de parfum range from 15-20%, eau de toilette 5-15%, and body mists or lotions often 1-5%. Always check specific guidelines for your application.
Calculate: Click the "Calculate Fragrance Oil Needed" button.
View Result: The calculator will display the precise amount of pure fragrance oil (in ml) you need to add to your carrier oil to achieve your desired concentration.
Important Considerations:
Safety First: Always use fragrance oils at safe dilution rates. Undiluted fragrance oils can cause skin irritation or sensitization. Refer to IFRA (International Fragrance Association) guidelines or your fragrance supplier's recommendations.
Carrier Oils: The type of carrier oil can affect scent throw and skin absorption. Common choices include jojoba oil, sweet almond oil, fractionated coconut oil, and grapeseed oil.
Total Volume: The calculated amount of fragrance oil is added *to* the carrier oil. The final volume of your product will be slightly larger than the initial carrier oil volume.
Units: Ensure consistency in units. This calculator uses milliliters (ml).
This tool is designed for estimations. For precise perfumery, always test small batches and adjust as needed based on your sensory evaluation and safety protocols.
function calculateFragranceOil() {
var carrierOilAmount = parseFloat(document.getElementById("carrierOilAmount").value);
var fragranceConcentration = parseFloat(document.getElementById("fragranceConcentration").value);
var fragranceOilResultElement = document.getElementById("fragranceOilResult");
// Clear previous results and errors
fragranceOilResultElement.textContent = "–";
// Input validation
if (isNaN(carrierOilAmount) || carrierOilAmount <= 0) {
alert("Please enter a valid positive number for Carrier Oil Amount.");
return;
}
if (isNaN(fragranceConcentration) || fragranceConcentration = 100) {
alert("Please enter a valid fragrance concentration percentage between 0 and 99.");
return;
}
// Calculation
// Formula: Fragrance Oil Needed (ml) = (Carrier Oil Amount (ml) * Desired Fragrance %) / (100 – Desired Fragrance %)
var fragranceOilNeeded = (carrierOilAmount * fragranceConcentration) / (100 – fragranceConcentration);
// Display the result, rounded to 2 decimal places
fragranceOilResultElement.textContent = fragranceOilNeeded.toFixed(2);
}