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Board Foot Calculator

Use values from the same period and currency. Fees and taxes apply only where explicitly included in inputs.

Use values from the same period and currency. Fees and taxes apply only where explicitly included in inputs.

Your workbenchInputs are not stored

Result

Enter your values and run the tool to see your result.

What this tool does

Computes lumber volume in board feet: thickness in inches × width in inches × length in feet ÷ 12, multiplied by the number of pieces.

How to use it

  1. Enter thickness in inches.
  2. Enter width in inches.
  3. Enter length in feet.
  4. Enter the piece count and run it.

Worked example

Ten pieces of 2 in × 6 in × 8 ft lumber give 2 × 6 × 8 ÷ 12 × 10 = 80 board feet.

Calculation method

Board feetthickness*width*length*count/12

Frequently asked questions

Is mixing units correct?
Yes. Board feet conventionally take thickness and width in inches with length in feet. Entering length in inches gives a figure 12× too large.
Nominal or actual dimensions?
Lumber is normally sold by board feet computed from nominal sizes such as 2×4. Dried and planed pieces measure less, so agree the basis with your supplier.

What this tool does not cover

Rectangular sections only. Knots, splits, cutting loss, and pricing are not included.

References