Roof Pitch Calculator | Calculate Roof Slope and Angle

Roof Pitch Calculator

Results

Pitch: 6:12
Angle: 26.57°
Grade: 50%
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Understanding Roof Pitch

Run Rise Pitch

What is Roof Pitch?

Roof pitch is the measurement of a roof's slope expressed as a ratio of vertical rise to horizontal run, typically over 12 inches. For example, a 6:12 pitch means the roof rises 6 inches for every 12 inches of horizontal distance.

Common Roof Pitches

Standard roof pitches typically range from 4:12 to 9:12, with variations based on:

  • Climate conditions (snow, rain, wind)
  • Architectural style
  • Building codes
  • Material requirements

Types of Roof Slopes

Roofs are categorized by their pitch:

  • Flat Roof: Less than 2:12
  • Low Slope: 2:12 to 4:12
  • Conventional: 4:12 to 9:12
  • Steep Slope: Greater than 9:12