This calculator will help you determine the shrinkage or expansion a board of a specific species, size and moisture content as it acclimates to a different moisture content.

https://www.woodweb.com/cgi-bin/calculators/calc.pl?calculator=shrinkage

Equilibrium Moisture Content (EMC) is the moisture content that a hygroscopic medium (wood in our case) will eventually acclimate to based on temperature and relative humidity.

https://emc.ces.ncsu.edu/

The Wood Database is the go-to source for information on the properties and mechanics of wood. Each domestic and exotic species is detailed on the site.

https://www.wood-database.com/wood-filter/

There are many good moisture meters out there… and many bad ones. Lignomat is the meter that we trust here at the mill. They have an affordable product that is a must have for any serious woodworker.

https://lignomatusa.com/