Why use this tool?
Ordering too few deck boards means a second trip to the store; ordering too many wastes money. This calculator estimates board count, linear footage, and screws needed based on your deck's dimensions, with a waste-factor buffer built in.
How it works
- Enter your deck's length and width.
- Set your board width and preferred waste percentage.
- Read the estimated boards, linear footage, and screw count.
Frequently asked questions
What waste percentage should I use?10% is a common default that covers cutting waste and mistakes. Complex layouts with lots of angles may need more.
Does this include joists and footings?No, this version estimates decking boards and fasteners only — joist and footing counts may be added in a future update.
How accurate is the screw estimate?It's a rough planning figure based on roughly 5 screws per square foot, not a substitute for a materials list from your supplier.