MaterialPilot
Calculator

Decking Calculator

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

Use decimals when needed. This estimate updates live and is safe to tweak before you buy materials.

Minimum 1 ft. Commas or periods work for decimals.

Minimum 1 ft. Commas or periods work for decimals.

Minimum 1 in. Commas or periods work for decimals.

Minimum 4 ft. Use whole numbers for the clearest estimate.

Minimum 0 in. Commas or periods work for decimals.

Minimum 0. Use whole numbers for the clearest estimate.

Estimate updates automatically as you type.

Estimated deck boards

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Buying guide

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.