Deck Screw Calculator
Estimate deck screw quantity, package count and fastener cost from deck dimensions, board width, joist spacing and screws per intersection.
Default project preview
1,210 screws
Board rows
35
Joist lines
16
Fastener intersections
560
Purchased screws
1,400
Calculator
Build the material order
Your order will appear here
Enter the project details and calculate a rounded material estimate.
Methodology
Transparent calculation
BuildMeter converts every input to a consistent internal unit, applies the selected allowance, and rounds products up to whole purchasable units.
Board rows = deck width ÷ installed board width. Joist lines = deck length ÷ joist spacing plus the end support. Screws = rows × joist lines × screws per intersection, with extra allowance and package rounding.
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FAQ
Deck Screw Calculator questions
Why add one joist line?+
Spacing counts the gaps between supports, so a run usually has one more support line than spaces.
Does this include stairs and railing?+
No. Stair, fascia, railing, blocking and trim fasteners should be estimated separately.
Can hidden fasteners use this calculator?+
Only when the entered fasteners per intersection and package quantity match the hidden-fastener system.