Metric Republic / Roof & Site Geometry / Roof Panel Calculator

Roof Panel Calculator

Estimate the number and total length of full-height panels for a symmetrical gable roof.

How it works

Estimate the number and total length of full-height panels for a symmetrical gable roof.

Core method:
Panels per slope = ceil(eave length ÷ effective cover width). Panel length is the roof slope length.

Before you use the result: Check project drawings, supplier data and site conditions before ordering materials.

Practical use

Enter dimensions from the latest drawings or verified site measurements. Adjust allowances and material properties to the supplier or specification you are actually using. Results update instantly as inputs change.

Keep units consistent with the source information.
Use project-specific densities, pack sizes and coverage rates where provided.
Round purchasing quantities to supplier packaging and delivery rules.

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