Estimate deck area, decking linear feet and board count from deck dimensions, board size, spacing and waste.
Use the connected calculators in this build for related estimates without starting over.
Enter the requested values above and select Calculate. Change any input to compare scenarios.
For a 12 × 16 ft deck using 5.5-inch boards with a 0.25-inch gap and 16-ft boards, the calculator estimates the number of board runs and boards before waste.
Actual layouts can require starter boards, picture framing, breaker boards, trimming and manufacturer-specific spacing. Use the result as a planning estimate.
Estimate deck area, decking linear feet and board count from deck dimensions, board size, spacing and waste.
Board runs ≈ deck width ÷ (board width + gap). Total linear feet = board runs × deck length. Board count = linear feet ÷ board length, adjusted for waste.
Yes. ERICH Calculators is free to use and no account is required.
See how formulas, sources and limitations are handled across ERICH Calculators.