How Many Deck Boards for a 10×10 Deck?

A 10×10-foot deck (100 sq ft) laid with standard 5.5-inch boards and a 1/8-inch gap needs about 30 eight-foot deck boards (213 linear feet of decking), including 10% waste for cuts. The calculator below is pre-filled — switch the board length or width to match what your lumberyard carries.

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