Deck Calculator
Result
Deck Calculator — free online calculator.
Formula
- Deck Calculator calculates its result from Deck Length, Deck Width, Board Width, Board Thickness, Gap Between Boards, Board Length. It uses the formula Boards across = ceil(Width / (Board Width + Gap)); Total length = Boards across * Deck Length; Boards = ceil(Total length / Board Length). Change any input to recalculate the result instantly.
- The main inputs are Deck Length, Deck Width, Board Width, Board Thickness, Gap Between Boards, Board Length. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Deck
- Deck Length: 6
- Deck Width: 4
- Board Width: 0.14
- Board Thickness: 0.04
- Gap Between Boards: 0.005
- Board Length: 4.8
Using Deck Length = 6, Deck Width = 4, Board Width = 0.14, Board Thickness = 0.04, Gap Between Boards = 0.005, Board Length = 4.8, the calculated result is 35.
Sample result: Calculating…
Frequently asked questions
What does the Deck calculate?
Deck Calculator — free online calculator.
Which values should I enter?
Enter Deck Length, Deck Width, Board Width, Board Thickness, Gap Between Boards, Board Length using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Boards across = ceil(Width / (Board Width + Gap)); Total length = Boards across * Deck Length; Boards = ceil(Total length / Board Length).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.