Roof Panel Length Calculator


Calculating the length of roof panels is crucial for accurate construction planning. Whether you’re a homeowner or a professional contractor, having the right measurements ensures efficiency and cost-effectiveness in roofing projects. To streamline this process, we present a simple yet effective roof panel length calculator.

How to Use

  1. Input Parameters: Enter the pitch (slope) of the roof in degrees, the width of the building, and the eave overhang (if any).
  2. Calculate: Click the “Calculate” button to obtain the required length of the roof panels.
  3. Result: The calculated length of the roof panels will be displayed.


The formula used for calculating the length of roof panels is:


  • Width = Width of the building.
  • Pitch = Slope of the roof in degrees.
  • Eave Overhang = Length of the eave overhang.

Example Solve

Let’s consider a building with a width of 30 feet and a roof pitch of 30 degrees, with no eave overhang.


Therefore, the length of the roof panels required is approximately 34.65 feet.


Q: Can this calculator handle different units of measurement?
A: Yes, as long as the units are consistent (e.g., feet for width and overhang).

Q: What if my roof has multiple sections with different pitches?
A: You’ll need to calculate the length of each section separately and then sum them up.

Q: Does the calculator account for ridge or hip lines?
A: No, this calculator focuses on the basic length calculation. Additional adjustments may be needed for ridge or hip lines.


The roof panel length calculator simplifies the often complex process of determining the required length of panels for roofing projects. By inputting basic parameters, users can quickly obtain accurate measurements, saving time and reducing errors in construction planning.

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