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MEASURE ONCE. PLAN YOUR PURCHASE.

Framing Material calculator.

Count parallel members from the extents and spacing specified in your project plan.

DECK

Your inputs

lengthwidth

Measurement schematic, not to scale. Use your own dimensions and product specification.

Use measurements from your plan and properties from your chosen product. Any prefilled values are illustrative.

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Where to get this value

Measure this dimension in your plan or on site and use the displayed unit. For irregular shapes, divide the geometry into the supported sections.

Where to get this value

Copy this specification from your supplied design or product documentation. This tool does not select spacing, fixing patterns or structural requirements.

YOUR ESTIMATE
∑

A clear estimate starts here.

Enter your dimensions and product details to see the quantity and purchase breakdown.

KEEP YOUR PROJECT TOGETHER

Plan the full project.

Reuse your dimensions, add the other materials and build a purchase list.

Open Deck project
Formula and assumptions
BEHIND THE NUMBERS

How this calculation works.

Both outer members are included. Add blocking and doubled members explicitly. This does not determine spans or member sizes.

Members = ceil(width ÷ spacing) + 1 + extrasCalculated with normalised units

A worked example

Illustrative inputs only. Product properties and design dimensions are not recommendations for your project.

Length of each member
4 m
Width across the members
2 m
Specified maximum spacing
500 mm
Additional specified members
2

Specified members: 7 members

Before you purchase

Use dimensions from your plan and properties from your chosen product. Any design spacing, section or fixing pattern must already be specified.

Method: dimensional arithmetic and user-supplied specifications. Software checks: 2026-10-03. Calculation and review policy.

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