I weigh all of my gear on a small digital scale from Harbor Freight at home before heading out.

I have been tempted to get a digital type luggage or fishing type scale from Walmart to be able to weigh my fully loaded pack by just hanging it from the haul loop.

I have definitely used the pack on, pack off method on the old bathroom scale but I have found that this method varies wildly in the weight shown vs adding up all of the individual weights from my digital scale.

Newton