Deck Material Calculator
Decking boards, joists, posts, and fasteners for a residential deck.
Result
How to use this calculator
- Enter deck dimensions and board width.
- Read deck LF, joist count, and rough post count.
About this calculator
A typical deck: 16-in O.C. joists, 5/4×6 decking boards, posts every 6-8 ft on the perimeter. Use pressure-treated lumber for ground-contact components; cedar/composite for visible decking. This is a starting estimate; verify against local code.
Frequently asked
5/4×6 vs 2×6 decking?+
Joist spacing matters?+
Composite vs wood?+
Hidden vs exposed fasteners?+
Code requirements?+
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