Deck Screw Calculator
Estimate how many deck screws and how many boxes you need for a given deck area.
Fasteners & Hardware
Screws needed576
Boxes needed2
Material cost$84.00
Line total$84.00
Deckworks saves the math with the line item so your customer sees exactly how you priced it.
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How the math works
- 01Screws = deck area × screws per square foot.
- 02A typical rate is about 2.4 screws per square foot for 5.5in boards at 16in O.C. (two per joist crossing).
- 03Boxes = screws ÷ screws per box, rounded up.
Common questions
How many screws per square foot for decking?
Roughly 2.4 per square foot with 5.5in boards on 16in centers. Drop to about 1.8 at 24in O.C., or double it if you face-screw a picture frame border.
What about hidden fasteners?
Hidden clip systems are sold per square foot by the manufacturer — enter the clip rate in place of screws per square foot and the box count as clips per bucket.
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Deck Fastener Calculator
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Calculate the concrete volume for round deck footings and convert it to 60lb or 80lb bags.