Calculator
Result
Answer will appear hereEnter the values above and press Calculate to see the answer, step-by-step solution, and formula used.
How the result is calculated
Roof area = Footprint x Pitch factor; Squares = ft2 / 100
Roofing Calculator
Use this calculator to calculate roofing using a clear formula and simple inputs.
Explanation
What this calculator does
Roofing Calculator helps you calculate the result using clear inputs, a formula, and practical examples.
How LearnLinx Calculates This Result
Formula
Roof area = Footprint x Pitch factor; Squares = ft2 / 100
Enter your values and press Calculate to see each computation step with your numbers plugged into this formula.
Example
Enter your values, calculate the result, and review the formula used for the answer.
When to use it
Use it when you need a quick result for study, planning, documentation, or checking a manual calculation.
Common mistakes
- Measuring roof surface on a slope but also applying a pitch factor again.
- Ignoring waste for ridges, hips, and cuts.
- Assuming every shingle brand packs exactly three bundles per square.
Frequently asked questions
What is a roofing square?
One square equals 100 square feet of roof area. Bundle estimates assume about 3 bundles per square for asphalt shingles.
How is pitch handled?
Pitch is rise over 12. The surface factor is √(1 + (rise/12)²) applied to the plan footprint.
What formula does the Roofing Calculator use?
It uses: Roof area = Footprint x Pitch factor; Squares = ft2 / 100. The result page also shows a step-by-step breakdown of how your answer was calculated.
Is the Roofing Calculator free to use?
Yes. All LearnLinx calculators are completely free with no signup required. Signing in is optional and only adds a 60-day history of your calculations.