Deck board count Calculator

How to calculate deck board count

This tool calculates deck board count from Deck width (m), Board width (mm), Gap (mm). Enter each quantity in its labelled field, then use the formula below to check the calculation.

Formula

round up: (deck width × 1000 + gap) ÷ (board width + gap)

Worked example

Deck width (m)

3

Board width (mm)

140

Gap (mm)

5

Applying the formula to these values gives 21 boards.

What should I check?

Plan paint, tiles, flooring, concrete, gravel and soil quantities. Check the units shown on each field and add an appropriate allowance for your project.

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