Deck Calculator

Calculate all materials needed to build a deck: deck boards, joists, posts, beams, screws, concrete, and hardware.

47.0Kuses
8.5/10(430)
Deck Area
240 sq ft
Deck Boards
29
20ft each
Joists (2x8)
16
12ft each
Posts (4x4)
8
Beams (2x10)
2
20ft each
Concrete (60lb)
8
bags
Post Brackets
8
Joist Hangers
16
Screw Boxes (5lb)
3
~870 screws

Deck Building Materials

Standard joist spacing is 16" on center. Posts every 8 ft max. Use 2x6 or 5/4x6 deck boards. Always check local building codes.

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