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Vermicomposting Ratio Calculator
Work out how many worms you need for the food waste you produce each week.
leaf Free Online Tool
โก Instant Results
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Worms needed
Compare Your Options And Get Clear Answers
Work out how many worms you need for the food waste you produce each week.
Vermicomposting Ratio Estimator
Enter your numbers below for an instant estimate.
0
๐ก Tip: Worms (kg) = food waste per week x worm-to-waste ratio.
How It Works
Key concepts behind this calculator
1
Enter Values
Fill in each field with your own numbers.
2
Calculate
Results update as you change the inputs.
3
Review
Read the breakdown and the explanation.
4
Adjust
Change values to compare scenarios.
Quick Reference Guide
Vermicomposting Quick Guide
Typical values for reference.
| Waste kg/wk | Ratio | Bedding | Worms kg |
|---|---|---|---|
| 1 | 2 | 3 | 2.0 kg worms |
| 3.5 | 2 | 3 | 7.0 kg worms |
| 7 | 2 | 3 | 14.0 kg worms |
| 14 | 2 | 3 | 28.0 kg worms |
| Rule of Thumb | Check inputs | Use as a guide | Round sensibly |
Common Questions
Vermicomposting Ratio Calculator FAQ
Answers to common questions about this calculator.
About twice the weight of food waste per week.
Red wigglers (Eisenia fetida).
About three parts bedding to one part food.
Avoid meat, dairy and oily food.