The compost calculator works out total weight, total cost and volume from density, depth, length, price and width. Enter what you have and the relationship is applied straight away, so you get the answer without working through the algebra yourself.
What Is the Compost Calculator?
The compost calculator works out total weight, total cost and volume from density, depth, length, price and width.
Biological relationships are usually approximations rather than exact laws, so the output is best treated as an estimate with a sensible range around it.
How the Compost Calculation Works
The calculation applies the relationship as published, step by step, so each intermediate value can be checked against the underlying theory.
Keep the units consistent throughout. Mixing a percentage with a proportion is the single most common source of an answer that is out by a factor of a hundred.
Assumptions Worth Knowing
Any relationship used here assumes a constant rate, a representative sample, or a stable population. Real populations rarely meet those conditions for long, so treat the answer as a guide.
Where the inputs are field measurements, a single misread value can shift the result noticeably. Measure carefully and record what you used.
A Worked Example
Working through an example, with density set to 10, depth set to 5, length set to 2, the calculator returns area of 20, and volume of 100, and total cost of 10,000. Substitute your own figures and the same steps produce the same kind of answer.
Frequently Asked Questions
What do I need to work out total weight?
Enter density, depth, length, price and width. The calculator then works through the relationship and reports total weight, total cost and volume.
What does the compost actually calculate?
It takes density, depth, length, price and width and converts them into total weight, total cost and volume using the standard relationship for this problem. Each step is applied in turn, so every output is traceable back to the numbers you typed in.
How should I enter density?
Use the value you actually have, in the unit shown next to the field. Enter every value in the same unit system. The calculator assumes the figures you supply are consistent, so it cannot correct a mistake that happens before the calculation starts.
Do I have to fill in every field?
Only the fields a particular result depends on. If you leave one blank, the results that need it simply show a note instead of a number, and everything else still works.
Is the answer exact?
It is as exact as the formula and the inputs allow. The method itself is the standard one for this problem, so the only sources of error are the figures you enter and the precision you ask for.