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Calcimator

Roofing Calculator

Calculate roofing materials needed for your roof. Estimate shingles, squares, and costs based on roof dimensions and pitch.

Inputs

ft
ft
/12

Results

Roof Area

1,264.91 sq ft

Squares Needed12.65
Bundles Needed38
Estimated Cost$1,264.91

Roof Area

1,264.91 sq ft

How to Use This Calculator
  1. Start by filling in the input fields below. Results update instantly as you type, so you can experiment with different values to see how they affect the outcome.
  2. Roof Length — Length of the roof in feet. Accepts values from 1 ft to 500 ft (default: 40 ft).
  3. Roof Width — Width of the roof in feet. Accepts values from 1 ft to 500 ft (default: 30 ft).
  4. Roof Pitch — Roof pitch (rise over run, e.g., 4/12). Accepts values from 0 /12 to 24 /12 (default: 4 /12).
  5. Expand "Advanced Options" for additional fine-tuning. These optional inputs let you model more specific scenarios:
  6. Cost Per Square — Cost per square (100 sq ft) of roofing material. Accepts values from $0 to $1,000 (default: $100).
  7. Once all inputs are set, review your results in the Results panel. Here's what each output means:
  8. Roof Area — shown as a numeric value. This is the primary result of this calculator.
  9. Squares Needed — shown as a numeric value.
  10. Bundles Needed — shown as a numeric value.
  11. Estimated Cost — shown as a dollar amount.
  12. Explore the related calculators below if you need deeper analysis or want to approach this topic from a different angle.
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