🏠 What Is a Roof Pitch Calculator?

Whether you’re a contractor, builder, or DIY homeowner, calculating your roof pitch and rafter length is essential for planning and construction. Our free Roof Pitch Calculator takes the guesswork out of it, helping you get accurate results instantly.

• A roof pitch calculator is a handy online tool that allows you to calculate:
• Roof pitch (in inches per foot, like 6/12)
• Roof angle in degrees
• Total rafter length including overhang
• Roof surface area
• Approximate number of rafters needed

📐 Why Use an Online Roof Pitch Calculator?

Doing the math manually or using complex formulas can lead to mistakes — especially if you’re juggling pitch, span, and overhang dimensions. Our tool helps you:

• ✔️ Save time on manual calculations
• ✔️ Avoid errors on the job site
• ✔️ Visualize your roof dimensions with dynamic feedback
• ✔️ Plan material estimates and costs more accurately

Plus, it updates automatically as you enter values — no clicking required.

🔨 How to Use the Calculator

Simply enter:

• The span of your building (width wall-to-wall)
• The rise (vertical distance from wall to ridge)
• Optional pitch (if you know it instead of rise)
• The overhang (how far rafters extend beyond the wall)
• Rafter spacing (typically 16 or 24 inches)

The calculator will show:

Pitch as a fraction (e.g. 6/12)

• Roof angle in degrees
• Total rafter length
• Estimated roof area
• Number of rafters needed
• 📊 Who Is This For?

This tool is perfect for:

• Roofing contractors
• Builders and framing crews
• Architects and designers
• Homeowners planning a shed, garage, or roof extension

📈 Boost Your Project with Precision

If you’re planning a roofing job, you need reliable data. Our Roof Pitch Calculator helps you stay on track with materials, design, and execution.

Don’t risk guesswork. Use our calculator and get accurate measurements in seconds.

⚠️ Disclaimer:

This Roof Pitch Calculator is intended for general informational and planning purposes only. It provides approximate values and should not be relied on as a substitute for professional engineering advice, codes, or measurements. Always consult with a licensed contractor, architect, or engineer for your specific project before making any construction decisions. We are not responsible for any construction errors or miscalculations resulting from the use of this tool.