This calculator will help you appreciate why the air in the house dries so much when heating in the winter – particularly when heating with wood or any other method that will draw air in from outside.
Enter the temperature and humidity outside, then the temperature inside, and it will show show the theoretical indoor relative humidity. (Note that general living activities such as cooking, breathing, etc tend to increase humidity, and as such, the actual indoor humidity will almost certainly be much higher)
Outside temperature:
°C
Relative Humidity Outside:
%
Calculated Outside Dewpoint: °C
To calculate what the relative humidity would be at a different temperature, enter the inside Temperature:
°C
Calculated relative humidity inside: - %
TODO: Add a calculation for how much moisture needs to be put into the air to get to a set level based on volume of air in home
Like