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Candle Calculator

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Wax Needed: 0 g

Fragrance Oil Needed: 0 g

Candle making is both an art and a precise craft that requires the right balance of wax and fragrance oil to create a perfect candle. To help artisans and hobbyists achieve this balance, the Candle Calculator emerges as an invaluable tool. It simplifies the process of determining the exact amount of wax and fragrance oil needed based on the size of the candle being made.

Purpose and Functionality

The primary purpose of the Candle Calculator is to streamline the candle-making process by providing accurate measurements for wax and fragrance oil. This is crucial for ensuring that candles burn properly and release a consistent, pleasant scent. The calculator uses specific inputs and formulas to calculate the required quantities, making it easier for both beginners and experienced candle makers to get their recipes right every time.

How It Works: The Formulas

The Candle Calculator operates on two main formulas:

  1. Wax Quantity Calculation
    • Inputs: The volume of the container (in milliliters or cubic centimeters) and the density of the wax (commonly around 0.9 g/ml for soy wax).
    • Formula: Wax Weight (W) = Volume (V) × Density (D) This formula calculates the weight of the wax needed in grams.
  2. Fragrance Oil Calculation
    • Inputs: The weight of the wax calculated above and the desired percentage of fragrance oil to wax weight (typically between 6% and 10%).
    • Formula: Fragrance Oil Weight (F) = (Wax Weight (W) × Fragrance Percentage (F%)) / 100 This formula determines the weight of the fragrance oil needed in grams.

Step-by-Step Example

Let’s walk through an example:

Imagine you have a candle container that can hold 250 ml of volume and you’re using soy wax with a density of 0.9 g/ml. You want to use 8% fragrance oil.

  1. Calculate Wax Quantity:
    • Volume (V) = 250 ml
    • Density (D) = 0.9 g/ml
    • Wax Weight (W) = 250 × 0.9 = 225 grams
  2. Calculate Fragrance Oil:
    • Wax Weight (W) = 225 grams
    • Fragrance Oil Percentage (F%) = 8%
    • Fragrance Oil Weight (F) = (225 × 8) / 100 = 18 grams

So, for a 250 ml container, you would need 225 grams of wax and 18 grams of fragrance oil.

Relevant Information Table

Here’s a table summarizing the basic parameters and their typical values:

ParameterDescriptionTypical Values
Volume of Container (V)The container size in milliliters (ml)100 – 1000 ml
Density of Wax (D)Wax density in grams per milliliter~0.9 g/ml (Soy Wax)
Fragrance Percentage (F%)Percentage of fragrance oil to wax6% – 10%


The Candle Calculator is a must-have tool for anyone involved in candle making. By precisely calculating the amounts of wax and fragrance oil needed, it ensures the creation of high-quality candles with optimal scent throw and burn time. Whether you’re a seasoned candle maker or just starting out, this calculator simplifies the process, allowing you to focus on the creative aspects of candle design while leaving the math to the calculator. Its straightforward application leads to efficient and successful candle making, enhancing both productivity and enjoyment of the craft.

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