Last updated: April 13, 2026

Roof Pitch Calculator

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Table of contents

Roof Pitch and Angle

Roof pitch describes the steepness of a roof. It is typically expressed as inches of vertical rise over 12 inches of horizontal run (e.g., "4 in 12").

Pitch = (Rise / Run) × 12
in
in
4
in
18.4
°
1.054

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