Lumber Board Foot Calculator — Free Online Calculator & Formula Guide
Calculate board feet of lumber for any project. Shows nominal and actual board foot volumes with dimensional conversions.
✓ Formula verified: May 2026
Board Foot Calculator
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Total Board Feet (Nominal)
106.67 bd ft
Board Feet per Board (Nominal)
5.33 bd ft
Total Linear Feet
160 ft
Total Board Feet (Actual)
70.00 bd ft
Actual Dimensions (approx)
1.5" x 3.5"
Estimated Lumber Cost (Nominal)
$266.67
What if your nominal thickness changes? 1.5 inches → 80.00 bd ft · 2 inches → 106.67 bd ft · 2.5 inches → 133.33 bd ft
Scenario Comparison
Conservative (5%)
$16,470.09
$6,470.09 interest
Your scenario (7%)
$20,096.61
$10,096.61 interest
Aggressive (10%)
$27,070.41
$17,070.41 interest
High-risk (14%)
$40,224.71
$30,224.71 interest
Best return
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Lumber Quantity
Total Board Feet
106.67 bd ft
Per Board
5.3 bd ft
Linear Feet
160.0 ft
Estimated Cost$266.67
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