Deck Fastener Calculator
Estimate deck screws or nails for any deck size.
Use this deck fastener calculator to estimate how many deck screws or nails you need for any deck size. As a rule of thumb, allow about 350 deck screws per 100 ft² of decking with joists spaced 16 in on center. Increase the estimate by 20% for joists spaced 12 in on center.
Screws
700
deck screws
Weight
3
lbs (~300/lb)
Area
200
ft²
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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.
Which related calculators should I use next?
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