Candle Container Volume Calculator
A straight-sided jar needs only its inside diameter and height. Filling it with water is still the most accurate way, but this lets you work it out before the vessels arrive.
Your numbers
Container volume
277mL
Wax needed
249g
Formula
Container volume = π × (Container diameter ÷ 2)² × Container height × Fill level ÷ 100
A tapered jar holds less than this. For a square vessel, using a side as the diameter overstates the volume — check that one with water.
What to enter
| Input | Default | Accepted range |
|---|---|---|
| Container diameter (cm)The inside diameter, excluding the glass wall. | 7 | 0.5 and up |
| Container height (cm)The inside height, excluding the thickness of the base. | 8 | 0.5 and up |
| Fill level (%)How far up you fill; the top stays clear. | 90 | 10 ~ 100 |
Step by step
Quick reference table
Results when only Container diameter (cm) changes and everything else stays put.
| Container diameter (cm) | Container volume (mL) | Wax needed (g) |
|---|---|---|
| 3.5 | 69 | 62 |
| 5.25 | 156 | 140 |
| 7 | 277 | 249 |
| 10.5 | 623 | 561 |
| 14 | 1,108 | 998 |
What each result means
| Result | At default values |
|---|---|
| Container volume (mL)What the vessel holds; filling it with water is the accurate way. | 277 |
| Wax needed (g)The wax to melt, by weight. | 249 |
Common mistakes
A tapered jar holds less than this. For a square vessel, using a side as the diameter overstates the volume — check that one with water.
Glossary
- Container diameter
- The inside diameter, excluding the glass wall.
- Container height
- The inside height, excluding the thickness of the base.
- Fill level
- How far up you fill; the top stays clear.
- Container volume
- What the vessel holds; filling it with water is the accurate way.
- Wax needed
- The wax to melt, by weight.
Frequently asked questions
Q. How is Candle Container Volume Calculator calculated?
Container volume = π × (Container diameter ÷ 2)² × Container height × Fill level ÷ 100 — A straight-sided jar needs only its inside diameter and height. Filling it with water is still the most accurate way, but this lets you work it out before the vessels arrive.
Q. Can you walk through an example?
With Container diameter 7cm, Container height 8cm, Fill level 90%, the answer is Container volume 277mL.
Q. What do I need to enter?
Enter Container diameter, Container height, Fill level. The result recalculates as you type, and an empty box counts as zero.
Q. How much does the answer move if I change a number?
Changing only Container diameter (cm) moves the answer to Container diameter (cm) 3.5 → Container volume (mL) 69 and Container diameter (cm) 14 → Container volume (mL) 1,108. The table below lays out five steps.
Q. How are the numbers rounded?
Money is shown to the nearest whole unit, percentages to one decimal place and everything else to two. What you see is rounded; the calculation itself carries the unrounded value forward.
Q. Anything to watch out for?
A tapered jar holds less than this. For a square vessel, using a side as the diameter overstates the volume — check that one with water.
Related calculators
Materials differ in density and absorption. If your label states a figure, use it — the defaults here are only common values.