Free contractor tool

Deck Board Calculator

Estimate how much decking to buy from the actual board face width, gap, deck dimensions and stock length.

Board rowsLinear feetWaste + cost

Decking takeoff

Measure the deck, enter the actual board face width and gap, then choose which direction the boards run.

Deck lengthftDeck widthftActual board widthinGap between boardsinStock board lengthftWaste allowance%Price per stock board (optional)$

Boards run along

Board spacing varies by material, moisture and manufacturer. Use the gap required for the decking you are actually installing.

A nominal 5/4×6 deck board is not six inches wide. Enter the actual face width you will cover with.

Manufacturers specify installation gaps based on material and conditions. The calculator uses the gap you enter.

Stock count is based on total ordered linear footage. Staggered seams, picture framing and diagonal layouts can change the final cut plan.