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How many board feet in a 1×4×20' board?

Answer
6.67 board feet
10 boards: 66.67 board feet50 boards: 333.33 board feetNominal size: 1"×4"×20'

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How We Calculated This

Board Feet = (Thickness" × Width" × Length') / 12

(1 × 4 × 20) / 12 = 80 / 12 = 6.67 board feet

Related Calculations

How many board feet in a 1×4×8' board?2.67 board feetHow many board feet in a 1×4×10' board?3.33 board feetHow many board feet in a 1×4×12' board?4.00 board feetHow many board feet in a 1×4×16' board?5.33 board feetHow many board feet in a 1×6×8' board?4.00 board feet

Calculated using verified formulas. Last updated March 2026.