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Board Foot Calculator

Calculate board feet from nominal thickness, width, length, quantity, and waste.

Reviewed
2026-09-05
Units
US + metric

Calculated result / live

9.97 board ft

Order 9.97 board feet, then confirm the seller's actual dimensions and available lengths.

1.50 in × 7.25 in actual boards, 10.00 ft long, quantity 1.

Input panel

Project measurements

Secondary quantities
Board feet before waste9.06
Waste allowance10%
Order quantity9.97

Calculation trace

Formula with your numbers

1.50 × 7.25 × 10.00 × 1 ÷ 12 = 9.06 board ft; + 10% = 9.97

9.97 board ft
01

What this board foot calculator calculates

Ten boards that are 1.5 × 7.25 in actual and 8 ft long contain 72.50 board feet before waste.

Formula

Actual thickness × actual width × length in feet × quantity ÷ 12 = board feet.

Worked example

1.5 × 7.25 × 8 × 10 ÷ 12 = 72.50 board ft. Ten percent waste raises the order quantity to 79.75 board ft.

Ordering decision

Seller tally rules and available lengths can change the purchase. Check the actual tally at the yard.

The page cites the applicable Uzi Tools reference table beside the calculator. Product labels, current editions, local code, and a licensed professional govern structural, electrical, and life-safety work.

02

How to use it

  1. Enter the measured dimensions and keep the displayed units beside each field.
  2. Review the board feet from actual lumber dimensions result and the substituted formula before ordering.
  3. Adjust waste for the layout, cut pattern, product package, and site conditions.
  4. Copy or print the material list, then verify the cited product data and local requirements.
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Board feet from actual lumber dimensions

Use this board-foot calculator for rough-sawn or surfaced lumber quantity. Enter actual thickness and width, because nominal 2 × 8 lumber is 1.5 × 7.25 in in the cited dimension table.

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Limits and professional review

Measurements, product yield, waste, moisture, and site conditions can change the order quantity. Local code and a licensed professional govern structural and electrical work.

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Data sources

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Related calculations

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Same-project tools

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Questions specific to this estimate