Decks · fastening

Deck fastener calculator

Estimate face screws or hidden clips at board-row and joist intersections, plus boxes and cost.
Measurement guideDeck lengthDeck width

Transparent planning math

The result updates as inputs change, rounds purchase quantities up to whole packages where needed, and keeps allowance and pricing assumptions visible and editable.

Open the verified methodology for formula provenance, assumptions, a worked example, and limitations.