Step-by-step instructions
- Enter or select Rise.
- Enter or select Run.
- Tap Calculate.
- Review the result shown directly below the calculator.
Calculate roof pitch angle atan(rise/run).
Calculate roof pitch angle atan(rise/run).
The calculator applies the standard mathematical relationship for the labeled inputs and returns the computed result automatically.
Try entering realistic values for Rise and Run, then tap Calculate to see how the result changes.
Use the result as an estimate based on the values you entered. For planning decisions, double-check that the input units and assumptions match your real situation.
Tip: Keep all values in compatible units and use values from the same time period when the calculator compares two amounts.