Board Foot Calculator

Calculate board feet for lumber purchases. Enter board dimensions for single or multiple boards, or convert from total linear feet. Includes cost comparison across popular hardwood species.

Board Foot Calculator
Pricing (edit to match local rates)
Species Comparison Prices ($/BF)
Board Visualization
8 ft6 in1 in4.00 Board Feet(T × W × L) ÷ 12 = (1" × 6" × 8') ÷ 12
Board Feet
4 BF
8 linear ft
Total Cost
$24.00
at $6.00/BF
Purchase OptionQuantityEst. Cost
Oak$6.00/BF$24.00
MapleBest value$5.00/BF$20.00
Cherry$8.00/BF$32.00
Walnut$12.00/BF$48.00
Common Lumber Sizes Reference
NominalActual (in)BF per LF
1x40.75" x 3.5"0.22
1x60.75" x 5.5"0.34
1x80.75" x 7.25"0.45
2x41.5" x 3.5"0.44
2x61.5" x 5.5"0.69
2x81.5" x 7.25"0.91
2x101.5" x 9.25"1.16
2x121.5" x 11.25"1.41
Board foot calculations use nominal dimensions. Actual lumber dimensions are slightly smaller (e.g., a 1x6 is actually 3/4" x 5-1/2"). Pricing varies by region, species, grade, and supplier. Always confirm pricing with your lumber dealer before purchasing.