What the tool does, how to run it, and what to expect from the result.
Rows = deck width in inches ÷ (board width + gap), rounded up. A 12 ft wide deck with 5.5 in boards and ⅛ in gaps needs 144 ÷ 5.625 = 25.6, so 26 rows. With boards as long as the deck (16 ft), that is 26 boards, 416 linear feet. Order 5-10% extra for cuts.
A quick way to understand who this helps, what it solves, and where it connects next.
Homeowners, DIYers and contractors estimating materials before a store run.
Using the decking calculator without installing anything or signing up.
Short answers for the questions people usually have before trying a utility like this.
About ⅛-¼ in for wood; follow the manufacturer for composite, which also needs end gaps.
16 in on center for most decking, 12 in for diagonal boards or some composites.
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Enter your numbers and the result updates live in your browser. Nothing is uploaded and no server is used.
Estimates for planning; order 5-10% extra for waste and check local codes.