Roof Pitch Calculator
Result
Calculated result
3.6055512755
Based on the values entered.
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Roof Pitch Calculator — free online calculator.
Formula
Angle = atan(Rise/Run); Ratio = (Rise/Run)×12; Rafter = √(Rise²+Run²)
- Roof Pitch Calculator calculates its result from Rise, Run. It uses the formula Angle = atan(Rise/Run); Ratio = (Rise/Run)×12; Rafter = √(Rise²+Run²). Change any input to recalculate the result instantly.
- The main inputs are Rise, Run. Enter them in the units and format shown in the calculator.
- Keep measurements and project assumptions consistent before comparing or combining values.
- Changing any input above recalculates the result with the same calculation engine used by this page.
Example: Roof Pitch
Inputs
- Rise: 2
- Run: 3
Using Rise = 2, Run = 3, the calculated result is 3.6055512755.
Sample result: Calculating…
Frequently asked questions
What does the Roof Pitch calculate?
Roof Pitch Calculator — free online calculator.
Which values should I enter?
Enter Rise, Run using the units and format shown beside each field.
What formula does this calculator use?
The calculator uses the following relationship: Angle = atan(Rise/Run); Ratio = (Rise/Run)×12; Rafter = √(Rise²+Run²).
Why might my result differ from another source?
Results can differ when another source uses different units, rounding rules, conventions or assumptions. Compare the inputs and definitions before comparing results.
Does the result update automatically?
Yes. Changing an input updates the result using the same calculation engine shown on this page.