Online Calculators > Construction Calculators > Roof Pitch Calculator

Roof Pitch Calculator

Roof Pitch Calculator is used to calculate the roof rafter length, pitch, slope and angle of your roof based on the rise and run. The tool combines a roof slope calculator, rafter calculator and an angle calculator so that you can quickly calculate the needs for your roof constructions all in one place.

Roof Pitch Calculator
Rise
Run

Rafter Length
Roof Pitch
Roof Angle (degrees)
Roof Slope (12)

How to Calculate Roof Pitch?

Following are the formulas on how to calculate roof pitch in degrees, angle and slopes.

Roof Slope = Rise / Run * 12

Roof Angle = Inverse Tangent(Rise / Run) in degrees

Rafter Length = Square Roof of (Rise² + Run²)

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