Wax Melt Calculator
Calculate fragrance oil and wax amounts for clamshells, tarts, and snap bars — with the higher fragrance loads wax melts can handle.
Calculate Wax Melt Batch
Per mould / clamshell
— oz wax + — oz fragrance
- Total wax for batch: — oz / — g
- Total fragrance oil for batch: — oz / — g
- Combined melt weight per mould: — oz
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Wax melts vs. candles: fragrance load difference
Because wax melts have no open flame — they are heated on a warmer — there is no fire safety risk from a higher fragrance load. This means you can push to 10–14% depending on your wax, versus the 6–10% typical for container candles. Higher fragrance loads in wax melts produce significantly stronger cold and warm throw.
Best waxes for wax melts
| Wax | Max fragrance load | Scent throw | Notes |
|---|---|---|---|
| Soy 464 | 10% | Good | Smooth top, slight frosting common |
| Coconut 83 | 14% | Excellent | Premium cost; best scent throw |
| Paraffin tart wax | 12% | Very good | Harder snap, brighter colour |
| Soy/coconut blend | 12% | Very good | Popular balanced option |
Frequently Asked Questions
A single cavity (about 0.5 oz of wax) typically lasts 8–12 hours before the scent is exhausted. The wax itself does not evaporate — only the fragrance does. Replace when you can no longer smell it.
Yes — any container wax works for melts. You can use a higher fragrance load since there is no wick to drown. Some chandlers use leftover container wax specifically for melt batches.
Add fragrance at 185°F (85°C), stir well, then pour into moulds at 155–165°F (68–74°C) for soy. See the full Pour Temperature Guide for all wax types.