Does anyone know of an online source to tell me how much furniture weighs ?

Answer 1

The best people to ask is a moving & storage extimator,it is not an exact science but they come pretty close.

Answer 2

all ALL furniture is different and you're asking an impossible Q.
with all the sizes, types, L W H of all sticks, the wood that's used and is it dry or wet???, can't imagine what you could want to know something like that, but better give up or rephrase the Q to be more specific so you can get an answer.
sorry