How Much Wax Do You Need Per Candle?

The Basic Rule: Volume vs Weight

Wax is measured by weight (grams or oz), not volume (ml). A container that holds 250ml of liquid does not need 250g of wax.

The reason: melted wax is less dense than water (density ≈ 0.85 g/ml for soy wax). You also need to leave room for fragrance oil and some air space at the top.

Rule of thumb: multiply container volume in ml by 0.80 to estimate wax weight needed.

Example: 300ml jar → 300 × 0.80 = 240g of wax needed

Does Wax Type Affect Usage?

Yes. Different waxes have different densities:

• • Soy wax (container blend): ~0.83–0.90 g/ml
• • Paraffin: ~0.87–0.91 g/ml
• • Beeswax: ~0.95–0.97 g/ml
• • Coconut wax: ~0.86–0.89 g/ml

Beeswax is denser — you'll need slightly more grams to fill the same container. For most soy wax candle makers, a factor of 0.85 is a reliable estimate.

Accounting for Fragrance Oil

Fragrance oil is part of the total fill weight, not added on top of it. If you use a 8% fragrance load:

Total fill = Wax weight + Fragrance weight

If total fill = 240g and fragrance load = 8%:

→ Fragrance = 240g × 0.08 = 19.2g

→ Wax = 240g − 19.2g = 220.8g

Calculating Wax for a Batch

To calculate wax for an entire batch, multiply per-candle wax by the number of candles, then add 5–10% buffer for waste (pouring overflow, residue left in the pouring pot):

Batch wax = (Wax per candle × Number of candles) × 1.08

This buffer prevents you from running short mid-batch.

Use the Free Wax Calculator

Our free wax usage calculator handles all of this automatically. Enter your container size, number of candles, wax type and fragrance load percentage — and get exact wax and fragrance quantities for your batch.