Roof Pitch Conversion
Convert between all common roof pitch measurements with precision
Roof Pitch Reference Guide
Common roof pitch values and their applications
| Pitch (in 12) | Angle | Percentage | Roof Type |
|---|---|---|---|
| 0.5:12 | 2.39° | 4.17% | Flat Roof |
| 2:12 | 9.46° | 16.67% | Low Slope |
| 4:12 | 18.43° | 33.33% | Conventional |
| 6:12 | 26.57° | 50% | Conventional |
| 9:12 | 36.87° | 75% | Steep |
| 12:12 | 45° | 100% | Steep |
| 18:12 | 56.31° | 150% | Very Steep |
How to Use This Tool
For Roofing Contractors:
This tool helps you quickly convert between different roof pitch measurements used in plans, estimates, and installations. Simply select your starting measurement type, enter the value, choose your target measurement, and get an instant, precise conversion.
Key Features:
- Convert between degrees, pitch ratios, percentages, and rise:run notation
- Get detailed roof analysis including recommended materials
- Safety notes for different roof pitches
- Professional reference table for common roof pitches
Common Applications:
• Reading architectural plans with different pitch notations
• Calculating material requirements for specific slopes
• Estimating labor costs based on roof steepness
• Compliance with building codes for minimum slopes
Measurement Explanations
Degrees: The angle of the roof surface relative to horizontal.
Pitch Ratio (in 12): Traditional roofing measurement - rise per 12 inches of run.
Percentage: Rise divided by run, expressed as a percentage.
Rise over Run: The actual rise and run measurements (e.g., 4:12 means 4 inches rise for every 12 inches run).