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Deck Calculator

Deck boards from the area and the board size.

Boards
38
Each board
4.8 m

Worked example

A deck 4.8 m by 3.6 m, with 90 mm boards and a 5 mm gap, needs 38 boards, each 4.8 m long. The count is how many boards fit across the width.

FAQ

Which way do the boards run?
Along the length you enter. The width is divided by the board width plus the gap.
Should I add waste?
The count is the theoretical fit. Add boards for cuts around posts and for unusable ends.
Are joists included?
No. This is the decking boards only.