Candle Container Volume Calculator
Enter your container dimensions to instantly calculate how much wax it holds — in ounces, grams, and millilitres. Supports cylinders, tins, and rectangular containers.
How Container Volume Affects Your Wax Order
Knowing your container's exact internal volume is the first step in any candle making batch. It determines how much wax to melt, how much fragrance oil to add, and how to plan your production quantities. Using the wrong volume estimate leads to wasted wax or underfilled candles.
This calculator uses the internal dimensions of your container — not the outside. Always measure from the inside with calipers or a ruler. Most candle jars and tins have 1–3 mm wall thickness, which reduces the effective volume.
Why 80% Fill Level?
The 80% fill level is the industry standard for container candles. It accounts for shrinkage as wax cools (soy can shrink 10–15%), leaves room for a second pour to level the surface, and provides a small headspace that prevents the melt pool from overflowing as the candle burns down. If you are planning a one-pour formula, use 90–95% to compensate for shrinkage without a second pour.
Fragrance oil volume (typically 8–10% of wax weight) adds slightly to the total pour volume, so your actual fill may be a few ml higher than the wax figure. This is why maintaining 80–85% headspace is always a safe default.
Wax Density Reference
Different waxes have different densities, which affects how many grams of wax fit in a given volume. Soy wax is the lightest common wax at around 0.86 g/ml. Beeswax is the densest at approximately 0.96 g/ml. This means for the same container, a beeswax candle will weigh more and take slightly more wax by weight. Always use the density appropriate for your wax blend for accurate results.