Calculator
Roof Pitch Calculator
Pitch decides safety gear, labor cost, and how much surface area your roof actually has. Enter rise over run and get the pitch ratio, angle, and area multiplier at once.
Pitch
6/12
Angle
26.6°
Area ×
1.118
Need a full estimate?
For an installed price by material, state, and complexity, use the main Roof Cost Calculator.
Get full estimateFrequently asked
- What is a standard roof pitch?
- Most U.S. homes fall between 4/12 and 8/12 — considered a conventional-slope roof. Below 4/12 is low-slope; above 9/12 requires steep-slope safety equipment.
- How does pitch affect roofing cost?
- Steeper pitches slow crews and add safety gear, typically adding 10–40% to labor cost versus a walkable 4/12 – 6/12 roof.
Related roofing calculators
Free tools that pair with this one — jump between them to plan every part of your project.