About this calculator

Most asphalt shingles cover ~3.1 m² (33.3 ft²) per bundle, and you need three bundles per 'square' (100 ft²). Add ~10% for ridges, valleys and waste.

Frequently asked questions

What does the Shingle Bundle Calculator do?

How many bundles of asphalt shingles you need for a given roof area. Most asphalt shingles cover ~3.1 m² (33.3 ft²) per bundle, and you need three bundles per 'square' (100 ft²). Add ~10% for ridges, valleys and waste.

Is the Shingle Bundle Calculator free to use?

Yes. Every calculator on Calcurly.com is free, works in your browser without sign-up, and can be embedded on your own website.

How accurate is the Shingle Bundle Calculator?

Results are calculated in real time using industry-standard formulas. Treat the output as a well-informed estimate — always cross-check with local regulations, product datasheets, or a qualified roofing professional before committing to a purchase or a job.

What inputs does the Shingle Bundle Calculator need?

Enter values for: Roof area (m²), Waste %. Sensible defaults are pre-filled where possible so you can start with a single change.

Can I embed the Shingle Bundle Calculator on my own website?

Yes — copy the iframe snippet at the bottom of this page, or use the Embed Generator to customise the size. The embedded version stays in sync with the live calculator on Calcurly.com.