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屋顶坡度

确定屋顶坡度的倾斜度、角度和百分比。

In construction, the 'pitch' of a roof describes its vertical rise relative to its horizontal run. Understanding pitch is vital because it determines which roofing materials can be used (e.g., shingles vs. metal), how fast water will drain, and the complexity of the rafter cuts. In the US, pitch is typically expressed as a ratio over 12 (like 4/12), while engineers may prefer degrees. Our Roof Pitch Calculator provides both, helping homeowners and contractors communicate clearly and ensure their roof meets local building codes for snow load and weather resistance.

坡度

4/12

Roof angle: 18.4° (33.3% grade)

高度 (Rise)4
水平距离 (Run)12
角度18.4°

工作原理

The tool uses the Rise and Run inputs to calculate the slope. It determines the Pitch-over-12 by normalizing the ratio, and uses the arctan function to find the exact Angle in degrees.

计算公式

Angle = arctan(Rise / Run)

Calculation Examples

1. **Common Pitch**: A rise of 6 inches and run of 12 inches is a **6/12 pitch** or a **26.6° angle**.

Why use this tool in your daily life?

Professional structural planning. This service ensures your roof meets local building codes for snow and wind loads, providing the foundational angles needed for safe and durable construction.

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