Calculators

Dreaming up a little project, came across these.

The first is more useful at a real lumber yard than the closest big
box, but has a nice little table for how many board feet come in
common sized timbers.
http://www.dannylipford.com/board-foot-calculator/

I'm having a little trouble getting this to work reliably so far, yet
it's interesting and with a comprehensive species list, showing for
instance three different strains of Douglas Fir.
http://www.woodweb.com/cgi-bin/calculators/calc.pl?
calculator=weight_bd_ft

Mark