Roofing Calculator

Calculate roofing area and materials for your project.

Pitch multiplier accounts for roof slope.

Results

Footprint area:
Roof area (with pitch):
Roof area (with waste):
Squares (100 ft²):
Materials needed:

About This Calculator

The Roofing Calculator estimates materials needed for roofing projects including shingles, underlayment, and other materials. It accounts for roof pitch and waste.

How to Use

  1. Enter roof dimensions
  2. Select the roof pitch
  3. Choose material type
  4. Click Calculate to see materials needed

Practical Use Cases

  • Roof Replacement: Plan complete re-roofing
  • Repairs: Estimate materials for repairs
  • New Construction: Calculate roofing needs
  • Insurance Claims: Document material requirements
  • Budgeting: Estimate roofing costs

? Frequently Asked Questions

How accurate is this

This calculator uses standard formulas and provides accurate results for typical use cases. For professional or critical applications, always verify results with certified professionals or official sources.

Is this calculator free to use?

Yes, this Roofing Calculator • Construction • Calculator is completely free to use with no registration required. You can use it as many times as needed without any limitations.

Can I use this on mobile devices?

Absolutely! This calculator is fully responsive and works perfectly on smartphones, tablets, and desktop computers.

How do I interpret the results?

The results are displayed clearly with appropriate units. Refer to the About This Calculator section for detailed information.