calcs.homes
calcs.homes
Enter your deck's size and board dimensions to get total area, decking boards needed, and estimated material cost.
Estimate only — includes 10% waste; excludes framing, footings, and fasteners.
We divide deck area by the effective coverage of one board — its face width plus your board gap — to find total linear footage of decking needed, add 10% waste, then divide by your chosen board length and round up, since boards are sold as whole units. Cost multiplies that board count by your price per board.
Including the gap in the coverage math matters because gapped boards cover less linear distance per board than their bare face width suggests, and skipping it undercounts material. The 10% waste factor covers angled cuts, staggered seams, and boards with defects that get trimmed away — a standard margin contractors build into a materials order so a job doesn't stall mid-build waiting on more boards.
It depends on your deck's area and the width of your chosen board. Enter your dimensions above and we'll calculate the count, including a waste allowance for cuts.
No — this covers decking boards only. Framing lumber, footings, and hardware should be estimated separately based on your joist spacing and framing plan.