When to use this calculator
For a vertical straight-sided tank, capacity varies linearly with liquid depth but with the square of diameter.
Explore the material quantities calculators for other questions in this topic. For a related calculation, use the Deck Board Calculator: Estimate the number of parallel boards across a rectangular deck width.
PUTTING IT INTO PRACTICE
Cylindrical Tank Capacity: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Internal diameter (m) | 2 |
| Liquid depth (m) | 1 |
| Result | 3,141.592654 litres |
- Check the input labels and enter the example values above.
- Apply the relationship: Litres = π × (diameter/2)² × depth × 1000.
- The result is 3,141.592654 litres, rounded for display.
How to interpret your result
Assumes a vertical cylinder with flat base; a horizontal cylindrical tank needs a segment model.
Calculate net geometric quantities first, then apply a project-specific allowance where appropriate. Coverage per bag or pack should come from the product label. Bulk density, trimming and compaction can substantially change order quantities.
Frequently asked questions
Does a geometric estimate include waste automatically?
Only when a waste or allowance input is provided. Otherwise add an appropriate allowance separately before ordering.
When is the cylindrical tank capacity calculator useful?
For a vertical straight-sided tank, capacity varies linearly with liquid depth but with the square of diameter.
How do I use the cylindrical tank capacity calculator?
Enter internal diameter (m), liquid depth (m). The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Litres = π × (diameter/2)² × depth × 1000.
What should I check before using the result?
Assumes a vertical cylinder with flat base; a horizontal cylindrical tank needs a segment model.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
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