Roofing Calculators
Roof Pitch to Degrees Converter
Convert between pitch ratio, degrees, and slope percentage instantly. Enter any one value and the other two are calculated automatically. Includes a full conversion reference table.
Enter Any Value
Type in any field and the other values update automatically.
Angle Visualization
Pitch Ratio
6 : 12
rise per 12 run
Angle
26.57°
degrees from horizontal
Slope
50.0%
rise ÷ run × 100
Pitch Multiplier
1.1180
for roof area calculations
Pitch Category
Medium
Area Increase
+11.8%
Walkable?
Yes
Conversion Formulas
Pitch to Degrees Conversion Table
Complete conversion reference from 0.5:12 to 24:12 pitch ratios with degrees, slope percentage, and area multiplier.
| Pitch (X:12) | Degrees (°) | Slope % | Multiplier |
|---|
Roof Pitch Calculator
Calculate your roof pitch from rise and run measurements. Get pitch ratio, degrees, and slope percentage.
Calculate Roof Pitch →Roof Area Calculator
Calculate true sloped roof area from building dimensions and pitch. Results in square feet, square metres, and roofing squares.
Calculate Roof Area →All Roofing Calculators
Browse our full suite of free roofing calculators for every roof type and measurement need.
View All Calculators →Frequently Asked Questions
Common questions about converting roof pitch to degrees
How do I convert roof pitch to degrees?
Use the formula: degrees = arctan(rise / run) × 180 / π. For a standard pitch expressed as X:12, divide the rise (X) by the run (12), take the arctangent, then convert from radians to degrees. Our converter does this instantly for any value.
What is a 4:12 pitch in degrees?
A 4:12 pitch equals 18.43°. This means the roof rises 4 inches for every 12 inches of horizontal distance. It’s one of the most common residential roof pitches.
What is the minimum roof pitch for tiles in Australia?
Generally 20° (approximately 4.4:12) is the minimum pitch for concrete and terracotta roof tiles in Australia. However, always check the specific manufacturer’s specifications, as some tile profiles allow slightly lower pitches with appropriate sarking.
What is the minimum roof pitch for metal roofing?
Metal roofing typically requires a minimum pitch of 5° (approximately 1:12). Some standing-seam and concealed-fix products can go as low as 2°. Always confirm with the product manufacturer’s installation guide.
How does slope percentage relate to pitch?
Slope percentage = (rise / run) × 100. A 6:12 pitch has a slope of (6 / 12) × 100 = 50%. A 12:12 pitch (45°) equals 100% slope. Slope percentage is commonly used in civil engineering and drainage design.
Need Help Choosing a Roof Pitch?
Different roof types and materials require different minimum pitches. Our team can advise on the right pitch for your project.