Everyday

Board Foot Calculator

Calculate board feet for milled lumber from thickness, width, length, and quantity, or estimate raw-log yield with the Doyle Rule.

Inputs

Adjust your numbers

Results update as you type.

Calculation mode (required) Use milled lumber for boards; use Doyle log rule for raw-log yield estimates.

Number of pieces (required) How many matching boards or logs you are tallying.

Thickness (required) Board thickness. Hardwood sellers often quote rough thickness as 4/4 = 1 inch, 5/4 = 1.25 inches, and so on.

Thickness unit (required)

Width (required) Board face width before applying the board-foot formula.

Width unit (required)

Log diameter at small end (inches) (required) Small-end diameter inside bark for Doyle Rule log scaling.

Length (required) Board or log length. Choose the unit below.

Length unit (required)

Price per board foot (USD) Optional. Multiplies the calculated total board feet by a quoted $/BF rate.

Results

Total board feet —

Board feet per piece —

Estimated total cost —

Calculation basis —

How it works

Adds mixed-unit board-foot math, optional cost roll-up, and a Doyle Rule branch for users estimating standing-log yield from small-end diameter.