Deck Fastener Calculator
Count the screws, hidden clips, joist hangers and ledger fasteners for your deck — and get the right metal for the wood you're fastening.
Deck size
Fastening method
2 screws per board at every joist.
Decking material
Use: 305 or 316 stainless steel — nothing less
Dense, oily, tannin-rich boards corrode coated steel fast and bleed black around plain screws. Pre-drill and countersink every hole; #8 or #10 trim-head stainless with a Type 17 tip is standard.
- ✓Pre-drill 100% of holes
- ✓Hidden clips need a grooved edge — order pre-grooved boards
- ✓Seal end cuts with wax end sealer the same day
Shopping list
744
screws · 3 boxes of 350
Deck area192 sq ft
Board rows × joists26 × 13
Fasteners per sq ft3.9
Joist hangers26
Ledger screws (½" structural)24
Rim / blocking screws (3")43
Decking fastener budget≈ $164
Includes 10% waste. Hanger and ledger counts assume a ledger-and-rim frame; add hurricane ties for joists bearing on a dropped beam.
Browse deck fasteners →Frequently Asked Questions
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