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Open toolCandle Wax Calculator
Enter your jar's water weight to the fill line, candle count, wax specific gravity, and fragrance load percentage in the Candle Wax Calculator below to get exact dry wax and fragrance oil weights in both ounces and grams.
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Enter your details
Enter the inputs, then select Calculate Wax & Fragrance.
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Result will appear here
How Candle Wax Calculator works
The Candle Wax Calculator converts your container's water weight capacity into total wax-plus-fragrance fill weight using your wax's specific gravity (default 0.86), then splits that total into dry wax weight and fragrance oil weight so dry wax + oil equals 100% of your jar fill.
Total Pour Mass = WaterOz * Count * SpecificGravity; Wax = Total Pour / (1 + Load%/100); Oil = Total Pour - Wax.
Outputs every measurement in both avoirdupois ounces (oz) and grams (g, at 28.3495 g/oz) for precision digital scales.
Candle Wax Calculator Quick Reference & Input Guide
Review the input parameters, allowed value ranges, and worked reference cases for the Candle Wax Calculator below before running your calculation.
| Parameter / Scenario | Default / Sample Value | Rule or Allowed Range | Output / Usage Note |
|---|---|---|---|
| Input: Container water capacity (to fill line) | 8 | Range: 0.5 to 500 | Required workspace parameter |
| Input: Number of candles in batch | 12 | Range: 1 to 10000 | Required workspace parameter |
| Input: Wax specific gravity (density factor) | 0.86 | Range: 0.70 to 1.05 | Required workspace parameter |
| Input: Fragrance oil load (by dry wax weight) | 8 | Range: 0 to 20 | Required workspace parameter |
| Worked Case 1: 12-jar production batch (8 oz water fill, 0.86 soy gravity, 8% fragrance load) | Preloaded / test values | Total Batch Fill Weight = VesselWaterOz * Candles * WaxGravity; Dry Wax Weight = Total Fill Weight / (1 + FragranceLoad% / 100); Fragrance Weight = Dry Wax * (FragranceLoad% / 100) | Each jar holds 8 * 0.86 = 6.88 oz (195.0 g) of total mixture. Across 12 jars (82.56 oz / 2,340.5 g total pour), divide by 1.08 to get 76.44 oz (2,167.2 g / 4.78 lb) of dry soy wax and 6.12 oz (173.4 g) of fragrance oil. |
| Worked Case 2: Single 10 oz water-weight jar at 10% fragrance load (0.86 soy wax) | Preloaded / test values | Total Batch Fill Weight = VesselWaterOz * Candles * WaxGravity; Dry Wax Weight = Total Fill Weight / (1 + FragranceLoad% / 100); Fragrance Weight = Dry Wax * (FragranceLoad% / 100) | Total fill weight is 8.60 oz (243.8 g). Dividing by 1.10 gives 7.82 oz (221.6 g) of dry wax and 0.78 oz (22.2 g) of fragrance oil. |
How to use Candle Wax Calculator step by step
Place one empty jar on a digital scale, tare to zero, and fill with water to your desired wax fill line to find its exact water weight.
Enter container water weight and batch count
Input the weight of water (in oz) held by one jar up to the fill line, and enter how many jars you are pouring.
Set wax specific gravity (0.86 soy/paraffin, 0.95 beeswax)
Keep 0.86 for soy or paraffin wax, or adjust to 0.90 for coconut blends or 0.95 for beeswax.
Set fragrance load % and view oz and gram weights
Enter your fragrance oil percentage (typically 6% to 10%) and click Calculate Wax & Fragrance.
Worked examples for Candle Wax Calculator
See how a 12-jar soy batch and a single test candle split into wax and fragrance oil weights.
12-jar production batch (8 oz water fill, 0.86 soy gravity, 8% fragrance load)
Each jar holds 8 * 0.86 = 6.88 oz (195.0 g) of total mixture. Across 12 jars (82.56 oz / 2,340.5 g total pour), divide by 1.08 to get 76.44 oz (2,167.2 g / 4.78 lb) of dry soy wax and 6.12 oz (173.4 g) of fragrance oil.
Single 10 oz water-weight jar at 10% fragrance load (0.86 soy wax)
Total fill weight is 8.60 oz (243.8 g). Dividing by 1.10 gives 7.82 oz (221.6 g) of dry wax and 0.78 oz (22.2 g) of fragrance oil.
Never use jar label nominal size without weighing water
An '8 oz mason jar' filled to the shoulder below the threads often holds only 6.5 to 7.0 oz of water. Weighing water to your actual wick fill line prevents over-pouring.
How to interpret the Candle Wax Calculator output
Weigh your dry wax flakes to the Dry Wax Weight and your scent to the Fragrance Oil Weight.
Notice that 76.44 oz of wax * 8% = 6.12 oz of fragrance oil, and 76.44 + 6.12 = 82.56 oz total pour weight. Because grams are 28x finer than ounces, using the gram figures on your scale is recommended for small batches and test pours.
Input limits, assumptions, and related tools
Check your wax manufacturer's maximum fragrance load rating before exceeding 10%.
Most natural soy and paraffin waxes hold a maximum of 8% to 10% fragrance oil by weight; exceeding the wax's saturation point can cause oil sweating ('leaching') and poor wick combustion.
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Open toolCandle Wax Calculator: common questions
Answers about using Candle Wax Calculator and understanding its results.
Why is container water weight multiplied by 0.86 for soy and paraffin wax?
Melted candle wax is less dense than water. Water has a specific gravity of 1.00 (1 g/mL), while soy and paraffin waxes average 0.86 g/mL (86% of water's weight for the same volume). Therefore, a jar that holds 8.0 oz of water by weight holds 6.88 oz of wax + fragrance mixture.
Why do you divide total fill weight by (1 + Fragrance%) instead of just multiplying by Fragrance%?
Fragrance load is defined as a percentage of dry wax weight (Fragrance = Wax * Load%), and the combined wax + oil must equal your jar's fill capacity (Wax + Wax*Load% = TotalFill). Dividing TotalFill by (1 + Load%) solves for exact dry wax weight so the combined pour fits your jars without left-over pitcher waste.
What specific gravity should I use for beeswax or coconut wax?
Standard soy and paraffin waxes average 0.86, coconut-soy blends average 0.88 to 0.90, and pure beeswax averages 0.95 to 0.96.
Should I measure fragrance oil in fluid ounces or weight ounces?
Always measure fragrance oil by weight (avoirdupois ounces or grams) on a digital kitchen or postal scale. Different fragrance oils have different densities, so volumetric fluid ounces will distort your fragrance load percentage.
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