Metal Roofing Calculator
Standing seam and corrugated panels vary greatly; this uses a 24 sq ft effective coverage placeholder. Replace with your panel spec for orders.
Step 1: Units
Step 2
Enter project measurements
Use decimals if needed (e.g. 3.5).
Step 3
How to use this calculator
Enter sloped roof area. Increase waste for transverse cuts.
What the math is doing
Panels = ceil((sq ft × (1+waste)) ÷ 24).
Frequently asked questions
Clip spacing?
Engineering sets clip counts, not this generic tool.
Snow guards?
Add accessories separately.
Underlayment?
Synthetic rolls use roof area ÷ roll SF.
Panel length from eave to ridge?
Field measure each plane for metal orders.