A little less guesswork

Measure twice.
Calculate once.

Practical math for the workbench. Turn your lumber measurements into clear quantities, a useful tally, and a better plan.

Calculate board feet

Free to use. No account. Your measurements stay in your browser.

On the workbenchVolume / 001
8 ft length1 in thick6 in wide
1 in × 6 in × 8 ft ÷ 124 board feet
Formulas explainedFractions welcomePrint a useful tally

Start with the lumber.

One job. Clear inputs. A result you can check.

Lumber & materials

Board foot calculator

Tally different board sizes, enter fractions, estimate cost per board foot, and print your list.

Thickness × width × length
÷ 12 = board feet
Volume, made simple.

Thickness and width in inches. Length in feet.

From the field guide

What are you
actually buying?

A board foot measures volume. Your supplier decides how the board is tallied. Understand the units, dimensions, and price before you buy.

Read the board-foot guide