Melt Point Calculator
Calculate wax blend melt point from component wax melting temperatures and ratios. Predict blend hardness for candles, balms, and cosmetic bases.
Specialist tool for Candle Soap1 documented formula6 real workflowsPrivate in your browser
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Inputs that matter
Component 1 Percentage, Component 1 Melt Point, Component 2 Percentage, Component 2 Melt Point
Output to expect
Melt Point Calculator
How it works
1 documented formula across 1 calculation mode
- Keep 4 bounded inputs within the limits shown beside the fields.
- Confirm that every value uses the unit and time basis shown before comparing scenarios.
- Change one input at a time to see which assumption materially changes the result.
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Reference & details
How it works
Updated July 2026
How it works
Updated July 2026Weighted Average Melt Point
For simple blends, melt point approximates the weight-averaged melting temperature of components. Accurate for similar wax types; less so for eutectic interactions.
Blend MP (°F) = Σ (component MP × weight fraction)Softening Point vs Melt Point
Waxes have a melt range, not a single point. Reported melt points are typically the capillary melt point or drop melt point from manufacturer data.
Range ≈ blend MP ± 3–5°F depending on component spreadHardness Correlation
Higher melt point blends are harder at room temperature. Adding beeswax or stearic acid raises melt point; adding coconut oil or soft paraffin lowers it.
ΔMP ≈ Σ (fraction × ΔMP per component vs base wax)Updated: July 2026
Example Scenarios
70% soy (MP 120°F) + 30% paraffin (MP 150°F): blend MP ≈ 0.7×120 + 0.3×150 = 129°F. Harder than pure soy, better scent throw, adjust wick accordingly.
80% beeswax (MP 145°F) + 20% coconut oil (MP 76°F): blend ≈ 131°F. Soft enough for lip balm tubes at room temperature with good structure.
907 g paraffin (145°F) + 45 g stearic (MP 150°F, 5%): slight increase to ~145.3°F but noticeable hardness gain for pillar candle durability.
Common Mistakes to Avoid
Common Mistakes to Avoid
Using container wax melt point for pillar formulas
Container soy (~120°F MP) cannot support freestanding pillars. Blend with harder wax or additives to reach 140°F+ before molding pillars.
Assuming linear blend behavior for all wax combinations
Some wax pairs interact non-linearly. Always pour test samples and measure penetration hardness (dropping point) for production formulations.
FAQ
No. Waxes soften over a range. Manufacturer melt points are standardized test values. Blends may show gradual softening before full liquefaction.
Higher melt point waxes need more heat (larger wicks) to pool. Lower melt point waxes pool easily but may soften in hot storage. Match wick to blend melt point.
Linear weight averaging works well for paraffin-soy and similar blends within 20°F component spread. Large spreads or additives (vybar, polymers) deviate — test empirically.
Pillar blends typically 140–150°F (60–65°C) for heat resistance. Container waxes at 110–130°F are too soft for freestanding pillars.
FO lowers effective melt point slightly (1–3°F at 8–10% load) by acting as a plasticizer. High FO loads soften wax — factor into pillar and votive formulations.
About Melt Point Calculator
Blending waxes changes melt point, hardness, and burn characteristics. This calculator estimates the melt point of a wax blend from each component's melting temperature and weight ratio for candle and cosmetic formulation.