Calculators & tools
Tool
Your first steps towards self-sufficiency
How much space do you have? Sketch an initial layout for your garden.
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Tool
Rainwater calculator
Formula: roof area × rainfall in millimetres × efficiency. 1 mm over 1 m² equals 1 litre. This estimates potential collection, not tank size or drinking-water suitability.
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Tool
Plant spacing calculator
Rectangular grid with half the plant and row spacing left at the edges. Use the spacing for your crop. Paths are not included.
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