Calculator
Heating calculator
In winter, heating runs out before food does, and this is where most people underestimate. Enter how many days and how large a space you are planning for.
The calculation gives an order of magnitude, not a prescription: real consumption also depends on insulation, the type of stove and the moisture content of the wood.
What it is good for, and what it is not
This calculator comes from the PrepperPapa app, where it is free too. The calculation runs in your browser: we send nothing anywhere and store no data about it.
PrepperPapa app
The same in your pocket, without internet
These calculators are in the app too, free, and they work without a network as well. Alongside them: stock, emergency card, compass and knowledge base.
See what it can do