How to Use the Calculator
- Measure the length and width of each countertop section.
- Include islands, peninsulas, and L-shaped corners.
- Enter the measurements into the calculator above.
- Your total square footage will appear instantly.
Tip: Sink cutouts are automatically accounted for.
Why Accurate Square Footage Matters
- Estimate material needs and reduce waste.
- Compare costs across granite, quartz, marble, and quartzite.
- Provide precise information to your fabricator.
- Avoid unexpected extra costs during installation.
Material-Specific Guidance
- Granite: Natural stone with unique veining; slab yield and seams affect your final square footage.
- Quartz: Engineered stone; edge profiles may increase material needs.
- Marble: Delicate natural stone; allow extra for slabs with prominent veining.
- Quartzite: Durable stone; accurate measurement ensures correct material ordering.
Frequently Asked Questions
How accurate is the countertop calculator?
It provides a reliable square footage estimate, though final material use may vary depending on edges, seams, and layout complexity.
Can I use this calculator for any countertop material?
Yes — granite, quartz, marble, and quartzite are all supported.
Do I need professional measurements?
Basic measurements are sufficient for estimates. Fabricators may verify dimensions before fabrication.
Is this tool free?
Yes — always free to use for homeowners and contractors alike.
Trusted by Thousands of Homeowners
“Countertop calculator was easy to use and helped me get the information local vendors needed.” — F. Chiamero
“Saved me time and money before contacting fabricators — highly recommend!” — T. Jones