Roofing Calculator - Calculator See


Roofing Calculator

Calculate shingles, squares, and roof area for residential roofing projects.

Calculator Inputs

ft
Building length plus overhangs.
ft
Building width plus overhangs.
Vertical rise per 12 inches of run.
%
Waste buffer.

Calculated Results

Roofing Squares Required
24.00 Roofing Squares
Shingle Bundles (3/square) 72 Bundles
Actual Roof Surface Area 2,400 sq ft
Pitch Multiplier 1.202 (6/12 pitch)
Values calculate live as you adjust inputs.

About Roofing Calculator

Estimates roof area, squares, and materials.

What is Roofing Calculator?

Estimates roof area, squares, and materials.

How to Use This Calculator

  1. Enter dimensions and pitch.
  2. Read squares and bundles.

The Mathematical Formula & Variables

Squares = Area * Pitch Multiplier / 100

Step-by-Step Worked Example

Scenario: Standard house roof.

  1. Calculates squares and bundles.

Result: 24 Squares

Frequently Asked Questions

How many bundles per square?

3 standard bundles.