Quartz Slab Size Layout — Fit Your Kitchen on Fewer Slabs

Caesarstone's published sizes (checked 2026-10):

• Standard slab: about 120" × 56.5" (about 47 sq ft), 2 cm or 3 cm thick
• Jumbo slab: about 130" × 64.5" (about 58 sq ft), 2 cm or 3 cm thick. Caesarstone has published both 130" and 131.5" for the jumbo length in different places, which is one more reason to confirm the actual slab
• Other brands (MSI, Silestone, Cambria and others) use their own sizes. Treat "jumbo" as a category, not a fixed size, until your fabricator confirms the slab they'll cut
• Fabricators also need a little margin for trimming slab edges, so don't plan a piece right to the last inch

Granite doesn't have an equivalent standard: it's cut from natural blocks, so slab size varies by quarry and quarry lot. If you're working granite, measure the specific slab your fabricator has on hand rather than assuming a standard size — everything past that point (packing runs onto it) uses the same optimizer.

Take a kitchen needing a 121" × 26" long run, a 58" × 26" short run, and a 74" × 42" island top — run through EZNESTING's sheet nesting engine against real slab sizes:

• One standard slab (120" × 56.5"): only the island fits. The 121" run is longer than the slab, so it can't go on a standard slab at all, and the short run doesn't share the slab with the island either: after the island, no leftover strip is both 26" wide and 58" long.
• One jumbo slab (130" × 64.5"): the long run and short run fit side by side (55.5% of the slab used), but the island doesn't fit in what's left.
• The actual buy: one jumbo slab for the two runs, one standard slab for the island. 2 slabs total, not 3 — and not the 1 jumbo-covers-everything guess that looks plausible until you run the numbers.

That's the gap between eyeballing square footage and packing real rectangles: the three pieces total about 54 sq ft, less than one jumbo slab's 58 sq ft, but shape, not area, decides the slab count. (A real kitchen would also seam or reposition pieces with the fabricator; the point is to know the slab count before that conversation.)

Three rules specific to slab material drive the layout:

• Pattern runs in one direction. Veined quartz (and all natural stone) has directional movement; rotating a piece 90° to "make it fit" can mean a visible seam mismatch. Lock orientation per piece if the pattern requires it — a straight grid pattern (like most solid-color quartz) has no such constraint and can rotate freely
• Seams go where they're hidden and supported — over a cabinet partition or at a sink cutout, never floating mid-span or spanning an open appliance bay
• Every offcut is real material. A leftover corner off a jumbo slab is often big enough for a bathroom vanity top or a backsplash — track it instead of scrapping it

The failure mode this catches: ordering "one jumbo slab, should be plenty" for a kitchen with an island, then finding out at the shop that the island doesn't share space with the runs and a second slab is now a rush order.

1. Open the optimizer in sheet mode — no account needed
2. Enter your slab size: about 120" × 56.5" (standard) or 130" × 64.5" (jumbo), or better, your fabricator's confirmed size
3. Enter each run and the island as a part: length × depth
4. Set kerf (⅛" covers most wet saws) and lock pattern direction per piece if the material has grain or veining
5. Run it: you get the slab count, a layout diagram per slab, and every offcut listed

The layout prints to PDF for the fabrication shop and re-runs instantly if a run gets remeasured.