Board Foot BLOCK TALLY Calculator

Definition

A block tally is a quick way to compare the actual footage of a unit to the invoiced footage. This method is very effective in determining larger discrepancies. A 2-4% variance in block tally results can be expected based on estimated air space and trimbacks. We recommend using this method on all inbound lumber purchases. If you do determine a sizable variance, re-confirm with a piece tally.

Steps:

1. (Layer Width x Length x Thickness) / 12 = Board Footage per layer.
2. Multiply by number of layers to determine total Board Footage.
3. Multiply by the air space percentage to account for air space. This will give you a good estimated board footage of the unit.

YOU MAY BE SURPRISED WHAT YOU FIND!