Calculator

Decking Calculator

Estimate deck boards based on dimensions, board size, and spacing.

Use decimals when needed. Your estimate updates instantly and is safe to tweak before purchasing.

Read the matching guide to avoid common material ordering mistakes.

Decking Calculator FAQ

Why does board count look high?

Cuts, pattern alignment, and edge trimming increase board needs.

Should I buy all boards same length?

Usually yes for easier layout, unless your design intentionally staggers lengths.