Roof Pitch Calculator
How to calculate roof pitch
- Enter the rise and run, or the angle.
- Add the footprint area to get the roof area, or a rafter's horizontal run to get its length.
- See the pitch, angle, slope and multiplier.
Frequently asked questions
What does 6/12 mean?
The roof rises 6 units for every 12 units across. That is a 26.57° angle and a 50% slope.
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