Countertop Calculator

Calculate countertop area for runs, islands and backsplash, plus the minimum number of quartz or granite slabs.

Countertop area73.4 ft²63.8 ft² + 15% waste · 6.82 m²

Slabs (area-based minimum)

Seams, vein matching and the island’s size can need an extra slab — let the fabricator template before you order.

Frequently asked questions

Is my data uploaded?

No. The calculation runs entirely in your browser — nothing you type is sent to a server.

Is it free?

Yes — free, unlimited and no sign-up.