Deck Calculator
Calculate decking boards, joists, posts, and hardware needed to build a deck.
How to Use the Deck Calculator
- 1
Enter deck dimensions
Input the length and width of your planned deck.
- 2
Select decking material
Choose wood, composite, or PVC decking.
- 3
Include railing
Check if you need railing and specify total length.
- 4
View materials list
See boards, joists, beams, posts, and hardware needed.
💡 Tips & Tricks
- •Composite decking costs more upfront but requires zero staining or sealing long-term.
- •Ensure ledger board is properly flashed to prevent water intrusion into the house.
- •Space deck boards 1/8"–1/4" apart for drainage and expansion.
Frequently Asked Questions
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