How this estimate works
The calculator applies: board feet = count x length x width x thickness / 12; cost = board feet x price x (1 + waste/100). Keep measurements in one unit system and round up when suppliers sell whole units.
Limitations
Nominal versus actual sizes, grade, knots, defects, and minimum order lengths matter.
Source to check
Read the authoritative guidance for lumber calculator
Frequently asked question
What is a board foot? It is 144 cubic inches of lumber; confirm the seller uses the same convention.