Pro calculator
Deck Fastener Calculator
Estimate deck screws or nails for any deck size.
How does the deck fastener calculator work?
Rule of thumb: ~350 deck screws per 100 ft² of decking at 16 in on-center joists (2 screws per board per joist). Increase 20% for 12 in OC joists.
What else do people ask about this calculator?
How many screws for a 200 sq ft deck?
About 700 deck screws at 16 in OC, or roughly 2.5 lbs of #8 × 2.5 in screws.
Screws or nails for a deck?
Screws hold better long-term and won't pop. Use exterior-rated coated or stainless screws for pressure-treated lumber.
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