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Deck Board Count Calculator
Boards, linear feet, and joists for a deck. Minimal-waste length suggestions.
Boards needed
26
Linear feet
416
Joists
13
Board cost
$650
Least-waste board length
8 ft boards — 52 boards, 0.0 ft cut waste.
8 ft
52 boards
0.0 ft waste
10 ft
52 boards
104.0 ft waste
12 ft
52 boards
208.0 ft waste
16 ft
26 boards
0.0 ft waste
Joists at 16" on-center across 16 ft run. Board count assumes boards run parallel to deck length with 0.125" gap.
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What it does
Boards needed, linear feet of lumber, joist count. Pick board length that wastes least.
Runs entirely in your browser — no upload, no account, no watermark. For more tools in this category see the full tools index.
Embed this tool on your siteShow snippetHide
Paste this snippet into any page. Loads on-demand (lazy), no tracking scripts, and sized to most dashboards. Replace the height to fit your layout.
<iframe src="https://freetoolarena.com/embed/deck-board-count-calculator" width="100%" height="720" frameborder="0" loading="lazy" title="Deck Board Count Calculator" style="border:1px solid #e2e8f0;border-radius:12px;max-width:720px;"></iframe>How to use it
- Enter deck dimensions.
- Set board width + spacing.
- Read board + joist count.
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