Calculator
Deck Material Estimator
Board count and joist count for a rectangular deck.
Inputs
You need
54 deck boards · 13 joists
- Square feet
- 192
- Boards across
- 27
- 8-ft deck boards
- 54
- Joists (16" OC)
- 13
- Rough material cost @ $30/sqft
- $5,760
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Enter your deck size and board width. Returns board count, joist count, and a rough material cost.
Materials you'll need
Frequently asked
What's the standard joist spacing?
16 inches on-center for most wood decks; 12" OC for many composites.