The calculation
12 fl oz × 29.57 = 355 g of water × 0.86 = 305 g full · × 90% = 275 g
Candle wax weighs about 0.86 times as much as the same volume of water (fill-weight rule). The fragrance oil is part of that fill, so the wax is the fill weight divided by (1 + fragrance load). Your jar may hold slightly more or less than its label — fill it with water and weigh it for an exact figure.
By fragrance load
| Fragrance load | Wax | Fragrance oil |
|---|---|---|
| 6% of wax | 259 g (9.14 oz) | 15.5 g (0.55 oz) |
| 8% of wax | 254 g (8.97 oz) | 20.3 g (0.72 oz) |
| 10% of wax | 250 g (8.81 oz) | 25.0 g (0.88 oz) |
For a batch (8% fragrance)
| Candles | Wax | Fragrance oil |
|---|---|---|
| 6 | 1,526 g (3.36 lb) | 122 g (4.3 oz) |
| 12 | 3,052 g (6.73 lb) | 244 g (8.6 oz) |
| 24 | 6,104 g (13.46 lb) | 488 g (17.2 oz) |
Check the maximum fragrance load for your wax — commonly 10% for container soy waxes and up to 12–15% for some blends (see the candle calculator table).
Other jar sizes
4 oz · 6 oz · 8 oz · 9 oz · 10 oz · 14 oz · 16 oz
Last reviewed: 2026-10-04 · Disclaimer