Construction/Home calculator

Lumber / Board Feet Calculator

Calculate board feet from lumber thickness, width, length, and quantity.

FormulaBoard feet = thickness(in) x width(in) x length(ft) x pieces / 12

Formula

Board feet formula

Board feet = thickness(in) x width(in) x length(ft) x pieces / 12

2 x 6 x 8 x 10 pieces equals 80 board feet.

FAQ5 common questions for this calculator.

FAQs

What is a board foot?+

A board foot is a lumber volume equal to 1 inch by 12 inches by 12 inches.

How does the Lumber / Board Feet Calculator calculate the result?+

For the Lumber / Board Feet Calculator, it uses the Board feet formula: Board feet = thickness(in) x width(in) x length(ft) x pieces / 12. 2 x 6 x 8 x 10 pieces equals 80 board feet.

What information do I need to use the Lumber / Board Feet Calculator?+

For the Lumber / Board Feet Calculator, enter lumber thickness, width, length, and quantity. Keep the units consistent with the calculator fields and compare your setup with the worked example on the page.

How accurate is the Lumber / Board Feet Calculator?+

Lumber / Board Feet Calculator is a material estimate based on the dimensions, unit system, and allowance values entered. It uses the Board feet formula, but cuts, openings, site conditions, pack sizes, and code requirements can change the final quantity.

What should I check before using the Lumber / Board Feet Calculator result?+

For the Lumber / Board Feet Calculator, check lumber thickness, width, length, and quantity, unit system, waste allowance, openings, site conditions, and supplier pack size. Use the estimate as a planning quantity before ordering materials.

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Construction/Home guide

How to use the Lumber / Board Feet Calculator

Calculate board feet from lumber thickness, width, length, and quantity. The page also explains the board feet formula and shows a practical example: 2 x 6 x 8 x 10 pieces equals 80 board feet.

  1. 1

    Enter your details

    Enter lumber thickness, width, length, and quantity, then complete any other fields shown in the calculator.

  2. 2

    Check the calculation

    Review the result alongside the board feet formula: Board feet = thickness(in) x width(in) x length(ft) x pieces / 12.

  3. 3

    Compare scenarios

    Change one or more inputs to see how they affect the lumber / Board Feet Calculator result before you use the estimate.