Candle Wax Calculator
Calculate wax weight needed for candle containers from container volume and wax density. Enter values for instant results with step-by-step formulas.
Reviewed by Daniel Agrici, Founder & Lead Developer
Formula
Wax Weight = Container Volume × Wax Density
Wax weight is calculated by multiplying the container volume (in oz) by the wax density factor (soy=0.86, paraffin=0.90, beeswax=0.96). Fragrance oil is a percentage (6-10%) of the wax weight. One wick per 3 inches of container diameter.
Worked Examples
Example 1: 8 oz Soy Candle Batch
Problem:You want to make 12 soy candles in 8 oz jars with 8% fragrance load.
Solution:Wax per candle: 8 oz × 0.86 = 6.9 oz\nTotal wax: 6.9 × 12 = 82.8 oz = 5.18 lbs\nFragrance per candle: 6.9 × 0.08 = 0.55 oz\nTotal fragrance: 0.55 × 12 = 6.6 oz\nWicks: 1 per candle = 12 total\nWax cost: 5.18 × $3.50 = $18.13\nFragrance cost: 6.6 × $1.50 = $9.90\nTotal: ~$46 | $3.83 per candle
Result:5.18 lbs wax | 6.6 oz fragrance | ~$3.83/candle
Example 2: Large Beeswax Pillar
Problem:Make 1 large 16 oz beeswax candle with 5% fragrance.
Solution:Wax weight: 16 × 0.96 = 15.4 oz\nFragrance: 15.4 × 0.05 = 0.77 oz\nWax cost: (15.4/16) × $8.00 = $7.70\nBurn time estimate: 77-108 hours\nBeeswax gives a natural honey scent even without added fragrance
Result:15.4 oz wax | 0.77 oz fragrance | ~$7.70 wax cost
Frequently Asked Questions
How much wax do I need to fill a container?
You need approximately 80-96% of the container's volume in wax by weight, depending on the wax type. Soy wax is lighter (density ~0.86) so you need less weight per ounce of volume, while beeswax is denser (~0.96). For an 8 oz container using soy wax: 8 × 0.86 = 6.9 oz of wax by weight. Always melt slightly more wax than calculated (5-10% extra) because wax shrinks as it cools and you'll need to do a second pour to fill sinkholes. For multiple candles, batch melting is more efficient.
Which wax type is best for beginners?
Soy wax (specifically 464 flakes) is the best for beginners. It's forgiving, easy to clean up with soap and water, has excellent fragrance throw, burns cleanly, and is affordable at $3-4/lb. It melts at a low temperature (120-180°F), reducing burn risk. Paraffin is the most traditional and gives the strongest scent throw but produces more soot. Beeswax is premium but expensive and difficult to add fragrance to. Coconut wax blends are growing in popularity for their creamy appearance and clean burn.
How do I estimate candle burn time?
A general rule is 5-7 hours of burn time per ounce of wax. An 8 oz soy candle with 6.9 oz of wax burns approximately 35-48 hours. Beeswax burns longer (7-9 hours per oz) due to its higher density and melting point. Factors that reduce burn time: larger wick, higher fragrance load, drafty location, and frequent lighting/extinguishing. For best results, trim wicks to 1/4 inch before each use and burn for at least 1 hour per inch of diameter to prevent tunneling.
References
Reviewed by Daniel Agrici, Founder & Lead Developer · Editorial policy