Wood Deck
Calculate Wood Deck instantly with the exact formula and a worked example.
Wood Deck
Deck aream²
Board lengthm
Board widthmm
Gap between boardsmm
Joist spacingmm
Cutting allowance%
Boards
76pcs
Boards per m²
2.3pcs
Rails / joists
60m
Screws (2 per crossing)
828pcs
More about: Wood Deck
What it calculates
The “Wood Deck” calculator computes Boards in pcs from 6 parameters: deck area (m²), board length (m), board width (mm), gap between boards (mm), joist spacing (mm), cutting allowance (%).
Used in design, material estimation, and structural calculations.
Example calculation
With parameters Deck area = 30 m², Board length = 3 m, Board width = 140 mm, Gap between boards = 5 mm, Joist spacing = 500 mm, Cutting allowance = 10 % the result is 76 pcs (Joists and fasteners — without allowance).
How to use
- Enter deck area, board length, board width, gap between boards, joist spacing and cutting allowance — each field above is adjustable with a slider.
- Boards (pcs) is calculated automatically as you type.
- Check the worked example below to see the formula applied to real numbers.
- Copy the result or bookmark this calculator.
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FAQ
How is Wood Deck calculated?
The Wood Deck calculator computes Boards (in pcs) from deck area, board length, board width, gap between boards, joist spacing, cutting allowance. Enter your values above and the exact formula is applied instantly; a worked example with real numbers is shown below.
Is the Wood Deck calculator free?
Yes. It is completely free, needs no signup, runs entirely in your browser, and sends no data to any server.
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