Deck Calculator
Calculate materials needed for your deck project
Deck Specifications
Deck Length (meters)
Deck Width (meters)
Joist Spacing (cm)
30 cm
40 cm
45 cm
60 cm
Decking Board Width (mm)
90 mm
135 mm
140 mm
190 mm
Decking Board Length (meters)
2.4 m
3.0 m
3.6 m
4.2 m
4.8 m
5.4 m
Board Gap (mm)
3 mm
5 mm
6 mm
8 mm
Wastage (%)
Calculate Materials
Calculation Results
Deck Area:
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Linear Meters of Decking:
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Decking Boards
Number of boards needed:
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Total linear meters:
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Structural Joists
Number of joists (90x45mm):
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Total joist length:
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Bearers (Support Beams)
Number of bearers (190x45mm):
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Total bearer length:
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Fasteners & Hardware
Deck screws (65mm):
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Joist hangers:
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Galv bolts (M12x150mm):
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