Free tool
Lumber Calculator
Board feet, drying time, green weight, and log yield. Built by someone who actually uses a sawmill.
Rough sawn thickness
Average board width
Board length
Number of boards
AI Log Advisor
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Describe your log — species, dimensions, any defects — and get expert cut recommendations.
Quick reference
1 board foot =
144 in³
Air dry rule
1 yr / inch
WM3 kerf
~0.055"
Oak shrinkage
~8% T, ~4% R
Sticker spacing
16–24"
Min. log dia.
6" for WM3