Lumber Calculator

Calculate board feet, quantities, costs, and material requirements for construction projects

Calculation Type

Select Calculation Type

Select a calculation type and enter dimensions to calculate

Board Feet: (Length × Width × Thickness) / 12
Standard unit for lumber volume

Linear Feet: Length in feet
Total length of lumber needed

Square Feet: Length × Width
Surface area coverage

Total Cost: Board Feet × Price per BF
Cost based on volume

Linear Cost: Linear Feet × Price per LF
Cost based on length

Square Cost: Square Feet × Price per SF
Cost based on area

2×4: 1.5" × 3.5" actual size
Most common framing lumber

2×6: 1.5" × 5.5" actual size
Wider framing for load bearing

1×6: 0.75" × 5.5" actual size
Common for siding and trim