Roof Pitch Converter

The Roof Pitch Converter simplifies the complex relationship between three common ways of describing a slope: ratio, degrees, and percentage. Understanding these differences is key to accurate roofing plans.

A roof pitch can be expressed in several formats. The most intuitive for builders is the ratio (e.g., 6:12), which means the vertical rise over a horizontal run of 12 inches. Our tool translates this ratio into precise measurements.

When you input a pitch, the converter instantly provides:

• Degrees: The angle of the slope relative to the horizontal plane.
• Percentage: The vertical rise as a percentage of the run (useful for quick calculations).

For instance, if you enter 7:12, the tool calculates that this pitch corresponds to approximately 31.6 degrees and an 58% grade—all necessary data points for material ordering.

To get the most accurate and useful data from this converter, always have your original source measurements (like architectural blueprints) readily available. These documents provide the foundational pitch information.

If you are designing a complex roof with multiple planes, consider converting the pitch for every single plane—including shed roofs and gables—and recording all three metrics (ratio, degree, percentage) for each one. This comprehensive approach prevents calculation errors down the line.

• Cross-reference: Use the tool to verify pitch calculations provided by others; do not rely on a single source of information.
• Account for overhangs: When measuring runs, remember that flashing and drip edges extend beyond the main wall line, which can slightly alter the effective run measurement.

By treating pitch conversion as a verification step in your design process, you significantly reduce the risk of structural miscalculations.