Board Foot Calculator

Use the default milled-lumber flow for boards. Switch mode for standing logs; open advanced options only when you want a $/BF cost estimate.

Calculation mode

Use milled lumber for boards. Use standing log when you know the small-end diameter and want the three common log-rule estimates side by side.

Default Milled lumber Units in / in / ft Price Off until entered
How many matching boards or logs you are tallying.
Board thickness. Hardwood sellers often quote rough thickness as 4/4 = 1 inch, 5/4 = 1.25 inches, and so on.
Board face width before applying the board-foot formula.
Small-end diameter inside bark. Used by all three log rules; logs 4″ or smaller are clamped to zero board feet.
Board or log length. Use the attached unit selector for feet, inches, or meters.
Advanced options
Price Optional $/BF Log rules Doyle / Scribner / International
Optional. Multiplies the calculated total board feet by a quoted $/BF rate.
Total board feet 4.00 BF
Board feet per piece 4.00 BF
Estimated total cost —
Calculation basis 1.00″ × 6.00″ × 8.00 ft