Deck Board and Materials Cost Calculator

Last updated: 15 May 2025 | Author: Brij | Review By: Irshad

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Easily plan your deck-building project with our Deck Board and Materials Calculator. Simply input your deck's dimensions and the size of your deck boards to quickly calculate the number of boards you need.

Enter Deck Size

Length:

Width:

Total Deck Area:

Enter board Size

Length:

Width:

Total board size:

Number of boards:

Cost estimations

Price per board:

Price for all boards:

$

How Many Deck Boards Do I Need?

It is easy to calculate how many boards you need. Just follow these simple steps

Step:1 Calculate Deck Area

To calculate the area of a deck, measure the length and width of the deck in the same units (e.g., meters, feet) and then multiply the length by the width.

Use the formula for the area of a rectangle:

$\text{Area} = \text{Length} \times {\text{Width}}$

Step:2 Calculate board size

Calculating the board size is as easy as the deck; you simply multiply the length and width of the board

Use the formula for the area of a board:

$\text{Board Area} = \text{Length} \times \text{Width}$

Step:3 Calculate Number of boards needed

To calculate the number of boards needed for your deck, Divide the total deck area by the area covered by one board.

Here's the formula:

$\text{Number of Boards} = \frac{\text{Deck Area}}{\text{Board Area}}$

Example Calculation

Let's say:

Your deck area is 300 square feet.
Each board covers an area of 5 square feet.

$\text{Number of Boards} = \frac{\text{300sq ft }}{\text{5sq ft/board}}$

$\text{Number of Boards} = {\text{60}}$

So, you would need approximately 60 boards to cover a deck area of 300 square feet, assuming each board covers 5 square feet.

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