Concrete Calculator
Estimate volume and bag count for a rectangular slab.
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Bonsai & Terrarium Substrate Mix Quantities
Scale your chosen three-component mix and see the volume required for each material.
02EXAMPLE RESULT
Total mix volume
13.200
L
Material A6.600L
Material B3.300L
Material C3.300L
Results update as you type. Calculate adds a snapshot to your history.
How this calculation works
You choose the materials and proportions. The example is not a species-specific bonsai, terrarium or animal-care recommendation. Rock, roots, drainage layers and container shape affect measured fill volume. This scales volumes only; it does not infer irrigation, fertilizer, pesticide or stocking instructions.
Total mix = fill volume × (1 + allowance). Each component volume = total mix × its share; shares must total 100%.
Your calculation, step by step
- Measure the actual volume to fill.
- Add the entered allowance.
- Scale each chosen material by its share.
A worked example
12 litres with a 10% allowance gives 13.2 L total. A 50/25/25 mix needs 6.6 L, 3.3 L and 3.3 L.
Work through an example.
Inspect the assumptions and limits before applying a result.