Roof Pitch Calculation Method

The calculation method follows industry-standard roofing formulas. Roof pitch is traditionally expressed as X/12, where X represents the vertical rise of the roof over 12 units of horizontal run. The calculator uses the following formula:

Roof Pitch = (Rise ÷ Run) × 12

In addition to the pitch ratio, the calculator performs advanced calculations to provide a complete technical overview:

• Roof angle in degrees, calculated using the arctangent trigonometric function

• Slope percentage, useful for engineering references and building standards

• Slope classification (Low, Medium, or Steep), displayed visually using color-coded badges

These values help users better understand roof geometry, assess material suitability, and plan roofing installations or repairs with confidence. By combining accurate mathematics with an intuitive interface, this Roof Pitch Calculator serves as both a practical estimation tool and an educational resource for any professional roofing website.