Construction material planning

Deck Calculator

Estimate surface decking boards from an explicit board orientation, board width, gap, stock length, and editable waste allowance.

Enter deck and board dimensions

Enter measurements and select Calculate.

Board-layout method

Boards run parallel to deck length. Rows = ceiling((deck width + gap) ÷ (board width + gap)); with zero gap, rows = ceiling(width ÷ board width). Rows × length gives base linear footage.

Surface-board boundary

Waste is an editable estimate. Whole boards use total adjusted footage divided by stock length and assume efficient offcut reuse—not a cutting optimization or structural deck design.

Worked example

The editable example values above demonstrate the formula and show every planning assumption used in the result.

Related calculators

This browser-local tool provides a planning estimate, not a purchase guarantee, supplier quote, structural design, engineering specification, permit decision, or code approval.