CALC
Flooring, Tile & Roofing

Roof Pitch & Slope Angle Calculator

Convert rise & run to pitch ratio (X/12), angle in degrees, and area multiplier.

Free to use No registration Works on any device
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Tool Overview & Guide

About Roof Pitch & Slope Angle Calculator

Determine your exact roof pitch ratio (X in 12), roof angle in degrees, grade percentage, rafter length per 12-inch run, and surface area multiplier. Supports multiple input methods: Rise & Run dimensions, direct slope angle in degrees, or standard pitch ratio selection with dynamic SVG triangle visualizations.

Pro Tip: Bookmark this page (Ctrl+D / Cmd+D) for quick one-click access whenever you need fast, accurate calculations on the go!

Why Choose Our Roof Pitch & Slope Angle Calculator?

Fast & Easy

Convert your data and files in just a few seconds.

High Quality

Get the highest quality, accurate outputs every single time.

Works Everywhere

Use on any device, phone, tablet or desktop without installs.

No Registration

No account needed. Zero signups, credits or hidden subscriptions.

Completely Free

All features are 100% free forever with no watermarks or fees.

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