How much wax do I need for wax melts?

A standard 6-cavity clamshell mould holds about 45ml of wax (roughly 40g of soy wax). For 10 moulds, you need approximately 400g of wax plus fragrance oil. Always make a little extra to account for wax left in the pouring jug.

What fragrance load should I use for wax melts?

Wax melts can typically handle a higher fragrance load than candles because there is no flame. Most makers use 8-10% for strong scent throw. Check your wax manufacturer maximum — soy wax usually supports up to 10-12%.

Do wax melts need to cure?

Yes, wax melts benefit from curing for 1-2 weeks. During curing, the fragrance oil binds with the wax, resulting in better cold and hot throw. Soy and coconut wax particularly benefit from longer cure times.

How much dye do I need?

For wax melts, use about 0.1-0.3g of liquid dye per 100g of wax. Start light — you can always add more. Too much dye can affect scent throw and may stain your wax melt burner.

CraftCalcs

Wax Melt Calculator \u2014 Mould Quantities & Fragrance

Calculate wax, fragrance oil and dye quantities for wax melt moulds.

Mould TypeMould dimension

Number of Moulds

Total moulds

Wax TypeType of wax affects melting point and burn rate

Fragrance Load

Percentage of fragrance oil relative to wax weight

How We Calculate This

Formula

Total volume = Cavity volume \u00D7 Mould count \u00D7 (1 + Overpour %)
Total weight = Volume \u00D7 Wax density
Fragrance oil = Total weight \u00D7 Fragrance load %
Wax needed = Total weight \u2013 Fragrance oil
Dye = 0.2g per 100g of wax

Frequently Asked Questions

Related Calculators

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Container Volume Calculator

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Dye Amount Calculator

Work out how much candle dye to add for your desired colour intensity.

Last updated: March 2026

All calculations are estimates. Always verify quantities before purchasing materials.