Roof Pitch Formula

Formula reference for roof angle, slope length and area.

Roof Pitch Formula
Roof Pitch FormulaVisual reference for this tool.

Roof Pitch Formula

Roof pitch affects covering area, sheet quantity, rainwater drainage and appearance.

Angle=arctan(Rise/Run); Slope Length=√(Rise²+Run²)

Example

Rise 1.5 m and run 4 m gives slope length about 4.27 m.

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  • Related calculators
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Frequently Asked Questions

Are these values exact?

They are estimation values. Site conditions, product specifications and local practice can change final quantities.

Can I use this on mobile?

Yes. Civil Micros is designed to work on mobile browsers without a backend.

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