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roof pitch calculator

Roof Pitch Calculator

Convert roof rise and run into pitch, slope percent, and roof angle. Built for quick jobsite use on a phone, tablet, or laptop.

Enter measurements

This is an estimating tool. Verify against plans, supplier specs, waste factors, and local requirements before purchasing material.

Estimated result
0
/12 pitch

How to use this calculator

  • A 6/12 pitch rises 6 inches for every 12 inches of run.
  • Roofing material requirements vary by pitch and local code.

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