Measure first
Use actual finished or nominal dimensions consistently and measure each wall/run separately where openings or layout changes occur.
DIYGAUGE CALCULATORS
Lumber & Carpentry
Calculate lumber, board feet, studs, plywood, molding and stairs.
Lumber & Carpentry
Board Foot Calculator
Calculate board feet from thickness, width, length and quantity.
Lumber & Carpentry
Lumber Calculator
Estimate board quantity and total linear footage.
Lumber & Carpentry
Wall Stud Calculator
Estimate wall studs from wall length, spacing and corners.
Lumber & Carpentry
Plywood Calculator
Estimate 4×8 sheet quantity for a surface area.
Lumber & Carpentry
Crown Molding Calculator
Estimate crown molding linear footage with waste.
Lumber & Carpentry
Stair Calculator
Calculate riser count, tread count and practical stair dimensions.
BETTER INPUTS, BETTER ESTIMATES
Plan Lumber & Carpentry projects with fewer surprises
Lumber, board-foot, stud, sheet-good, molding, baseboard and stair planning.
Use project-specific values
Where a calculator asks for coverage, yield, spacing, density, package size or price, use the value from the actual product or quote whenever possible.
Verify before ordering
Structural lumber sizing and stair geometry may be regulated by local code; quantity calculators do not replace span tables or code checks.
One estimating standard across DIYGaugeSee how units, waste, rounding and purchase quantities are handled.View methodology →