Deck Boards Calculator
Count the deck boards for a deck area, with a cutting allowance.
Quick answer: enter your details below and click Count Boards — your result appears instantly, right here in your browser. Nothing you enter is uploaded or stored.
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How to use
- Measure the deck area in square metres.
- Enter the coverage of one board.
- Click Count Boards.
About this tool
Enter the deck area and the coverage of one board, and the tool adds a 10 percent cutting allowance before rounding up to whole boards. The allowance covers end trims and awkward edges, and it is shown separately from the exact count.
Frequently asked questions
Should I allow extra for picture framing?
Yes, framed borders use extra board length, so add a further allowance for that detail.
What about gaps between boards?
Coverage per board should already reflect the laid width including the gap; check the supplier's figure.