Deck Fastener calculator.
Estimate fasteners from the board-to-support intersections in your specified layout.
Your inputs
Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.
A clear estimate starts here.
Enter your dimensions and product details to see the quantity and purchase breakdown.
Formula and assumptions
How this calculation works.
Use your actual fixing pattern, including any additional joints or edge details. The calculator does not design connections.
A worked example
Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.
- Board rows
- 20
- Support crossings per row
- 5
- Specified fasteners per crossing
- 2
- Fasteners per pack
- 100
- Waste allowance
- 10 %
Packs to purchase: 3 packs
Before you purchase
Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.
Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-03. Calculation and review policy.