Candle Wax Calculator

Calculate wax and fragrance weights from container volume, fill level, wax density and FO%. Supports ml and fl oz, density presets, and a shareable link.

Calculate Candle Wax & Fragrance

Your Results

Wax

194.4 g (6.86 oz)

Fragrance

15.6 g (0.55 oz)

Batch Total

210 g • Fill Volume ≈ 216 ml

Common FO% & Density Notes

Fragrance load: typically 6–10% (follow wax manufacturer limits).
Approximate densities (g/ml): soy ~0.90, paraffin ~0.88, coconut blends ~0.86.
Always verify with supplier SDS for your specific products.

References: Supplier SDS; CandleScience; The Wooden Wick Co.

How to Calculate Candle Wax

Formulas

fillVolume = containerVolume × fillLevel%

wax(g) = fillVolume(ml) × density(g/ml)

FO(g) = wax(g) × FO%

FO% per supplier guidance; verify wax max load (e.g., CandleScience SDS).

Calculation Steps:

1
Set container and fill level
Use ml or fl oz; vessels are not filled to 100%.
2
Enter wax density
Use supplier SDS (e.g., soy ≈ 0.90 g/ml).
3
Set FO%
Follow max load for the wax; default applies to wax weight.

Important Considerations

⚠️ Safety & Compliance

Follow supplier SDS (max FO%, pour temp), vessel suitability, warning labels, and local safety regulations.

🧪 Wax & FO Compatibility

Compatibility and max load vary by wax and fragrance; validate with supplier docs.

• Check max FO% for the wax
• Test for sweating/bleed
• Additives/colors alter performance

🌡️ Pour & Cure

Pour temperature and cure time affect hot throw and surface quality.

• Follow wax-recommended pour temp
• Allow adequate cure before testing

🕯️ Wick & Vessel

Wick size and vessel material impact melt pool and throw.

• Match wick to vessel diameter
• Glass/ceramic/metal conduct heat differently

🔥 Overload Risks

Exceeding max FO% can cause sweating, unstable burn, or safety issues.

• Never exceed supplier max FO%
• Burn-test small batches before scaling

Example Cases

Case 1: 240 ml glass jar

Inputs: 240 ml jar, fill 90%, density 0.90, FO 8% (on wax)

Results: Wax ≈ 194.4 g, FO ≈ 15.6 g, Total ≈ 210 g

Tip: Round to workable weights (e.g., 195 g wax, 16 g FO).

Case 2: 8 oz (fl oz) vessel

Inputs: 8 fl oz jar, fill 90%, density 0.88, FO 7%

Results: Wax ≈ 187 g, FO ≈ 13.1 g, Total ≈ 200.1 g

Note: 8 fl oz is ~237 ml; convert precisely for accuracy.

Frequently Asked Questions

How do I choose fragrance load %?

Follow your wax manufacturer maximum. Common ranges are 6–10% by weight of wax. Some waxes permit less or more—always check the product documentation.

What density should I enter?

Use the supplier SDS for your exact wax. As rough guides: soy ~0.90 g/ml, paraffin ~0.88 g/ml, coconut blends ~0.86 g/ml.

What is the safe wax pouring temperature for candle making?

Pour temperature varies by wax type: soy wax typically 120-140°F, paraffin 150-170°F, coconut blends 130-150°F. Always follow your specific wax manufacturer guidelines for optimal results and safety.

How do I calculate how much wax fits in my candle container?

Use this calculator with your container volume and desired fill level. Most containers are filled to 85-90% for safety and aesthetics. Measure your container in ml or fl oz, then multiply by your fill percentage to get the actual wax volume needed.

Why is my candle fragrance throw weak or too strong?

Fragrance throw depends on proper load percentage, wax type, wick size, and cure time. Use 6-10% fragrance load, ensure proper wick sizing for your container, and allow 1-2 weeks cure time before testing. Overloading fragrance can cause poor performance.