Roof Pitch and Angle Converter
Convert a roof’s rise over run between common x:12 pitch notation, a decimal rise/run ratio, percent slope, and angle in degrees. Results are rounded for readable field use while the calculation retains full precision.
Roof Pitch and Angle Converter
Convert a roof’s rise over run between common x:12 pitch notation, a decimal rise/run ratio, percent slope, and angle in degrees. Results are rounded for readable field use while the calculation retains full precision.
Method and assumptions
Figur normalizes each format to the rise/run ratio. It uses percent = ratio × 100 and angle = arctan(ratio); x:12 notation is 12 × the ratio.
- Run means horizontal distance, not the sloped rafter length.
- The pitch is uniform across the measured roof section.
- Displayed results are rounded while the calculation retains more precision internally.
Geometry reference only; it does not assess structure, materials, safe access, or building-code compliance.
Sources and references
Frequently asked questions
What does a 6:12 roof pitch mean?
The roof rises 6 inches for every 12 inches of horizontal run. That equals a 0.5 rise/run ratio, a 50% slope, and about 26.565°.
Can this tell me whether a roof is safe or code compliant?
No. It converts geometry only. Roof access, materials, structure, and code requirements need qualified local guidance.