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The main Navigation tabs at top of each page are Metric - inputs in millimeters (mm)
For Inch versions, directly under the main tab is a smaller 'Inch' tab for the Feet and Inch version.
Drop Down Menus have M for Metric Versions.
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Deck Calculator - Stumps, Bearers, Joists and Boards with Individual + Total Costs and Connections (fasteners)

Deck Length
Deck Width

Stump Width
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Enter Stump Height from ground level.
Stump Height + Bearer Depth + Joist Depth + Board Thickness = Total Deck Height above ground level.
Adjust stump height in results if stumps cast into footing.
Stump Height
Stump Centres
Stump Set In
 
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Footing dimensions used to calculate concrete volume. Assumes Stumps sit on top of footings at ground level - fixed with stirrups cast into concrete footings.
Footing Diam:
Footing Depth

Board Width
Board Thick
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Gaps adjusted to fit full width boards, equal to or nearest larger than entered Min.
For exact gap see Board Fit Options
Min Board Gap
Centres Adjusted to Fit Centres Adjusted to Fit Evenly
Bearer Thickness
Bearer Depth
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Requires longer stumps to maintain deck height
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Bearer Set In = Joist Overhang from OUTSIDE of bearer to end of joist (edge of deck)
Bearer Set In Inner
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From OUTSIDE of bearer to end of joist (edge of deck)
Bearer Set In Outer
Bearer Centres

Joist Thickness
Joist Depth
Joist Centres
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End Joist Set In allows Deck Board Overhang at each end of deck
End Joists Set In

Ground Fall in Width
Deck Material List and Cost Calculator Material List and Costs





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Total Deck Height  
Stump base (ground level) to board top

Deck Area =

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Use correct diagonal to square deck.
When both diagonals = deck is square.
Correct Diagonal to Square Deck =

Jump To   ↓ Stumps   ↓ Bearers   ↓ Joists   ↓ Boards

Scale

Deck plan with full dimensions - Stumps, Bearers, Joists, Boards, Timber Costs
     

Enter Linear Costs




Stumps Top ↑



STUMP Running set-out points along Deck ~ along Bearer (to near side of each stump)
Mark-out

Deck Stumps and Bearers diagram


STUMP Running set-out points across Deck ~ along Joist from Inside (to near side of each stump)
Mark-out

Fall in Width

Deck Stumps and Joists diagram



Bearers Top ↑



BEARER Running set-out points, across Deck ~ along Joist from inner side
(to near side of each bearer)
Mark-out

Deck Bearers diagram


Joists Top ↑



JOIST Running set-out points along Bearer (to near side of each joist)
Mark-out


Deck Joists diagram


Deck Boards Top ↑



Mark Every Boards (Red).  

BOARD Running set-out points.
Mark-out

Deck Joists and Boards diagram

Tips for Laying Deck Boards Read this Forum Thread about Tips for Laying Deck Boards

Set Length Boards
Board Estimate Only Estimate only - Allows wastage calculated from board length and joist spacings only.

Enter Costs per Linear Metre and % waste to calculate Total Cost

Stumps + % Waste @ $ m
Bearers + % Waste @ $ m
Joists + % Waste @ $ m
Boards + % Waste @ $ m
Connections:



Enter cost per linear metre and wastage % for Stumps, Bearers, Joists and Boards to Calculate individual and Total Costs. Linear metres and cost are auto updated when the deck is re-calculated, with individual costs for stumps, bearers and joists displayed in each section. Hit + and - buttons to open or close spacing, re-calculating the deck to find how different spacing options effect cost and materials.

Out of Square If your deck is slightly out of square (different widths), calculate results for both widths, and set out each end to suit. If necessary, adjust number of deck boards to match in both calculations, and see if different board gaps at each end of deck are acceptable, compared to equal gaps and cutting the last board at an angle. Use the widest dimensions for linear quantities.





DON'T BREATH THE DUST If you're cutting blocks, concrete, stone or ANYTHING and there's DUST - DON'T TAKE THE RISK
Don't cut it, or cut it wet so there's NO DUST - Silicosis Sucks
And if you're cutting wet, wear a mask - theres dust in the spray mist too!

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Inch or Metric? 👈
The main Navigation tabs at top of each page are Metric - inputs in millimeters (mm)
Directly under the main tab is a smaller 'Inch' tab for the Feet and Inch version.
Drop Down Menus have M for Metric Versions.



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