Roof Pitch Converter
Enter the roof rise and run to get the pitch ratio, angle in degrees and percent instantly.
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How to use
- Enter your values in the boxes above or pick an option.
- The result updates live — no button to press.
- Change a value or unit and the new result appears automatically.
Note
Pitch is usually written as rise over a 12-unit run (for example 6/12). For the rafter length, the slope factor = sqrt(rise^2 + run^2) / run is used.
Frequently Asked Questions (FAQ)
What does the roof pitch converter do?
It turns your roof rise and run into a pitch ratio, the angle in degrees and the percent grade, updating live as you type.
How do I measure rise and run?
Rise is the vertical height of the roof and run is the horizontal distance. Enter both in the same units.
What does a 6/12 pitch mean?
The roof rises 6 units for every 12 units of horizontal run, which is about 26.57 degrees.
Is the tool free to use?
Yes, it is free with no signup and everything runs in your browser.