Granite Slab Size (Standard & Custom Dimensions)

In this granite slab size guide, you’ll see the standard, jumbo, extra large & largest surface dimensions and price per square foot for a solid stone counter
Modern kitchen with granite kitchen island countertop white cabinets

There is really nothing better than the look of natural beauty that a real stone granite slab will give your kitchen countertops. Many homeowners are looking into using them for their kitchen islands and countertops as a focal point that will carry the whole look of their kitchen

Granite slabs can be pretty sensitive, especially to breakage and staining, so careful handling during the construction of any home, building, or improvement project is essential. This sensitivity does not repel homeowners whose hearts are set on the stone’s solid feel and beauty. [toc]

Standard Granite Slab Dimensions

Standard granite slab size

Aside from the granite colors and staining of the slab, it is important to know the essential background, like the size of the material

The size of a granite slab will vary since it is a natural material extracted from the earth. Generally, manufactured and processed slabs will have lengths between 9 to 10 feet or 108 to 120 inches and a width that ranges from 5 to 6 feet or 60 to 72 inches. This size can vary depending on the manufacturer. 

Typically, homeowners will need more than one slabs to construct a sizable island or countertop. Not to mention that there will be waste that would go on when cutting the stone, so these are some factors to consider when deciding how much material you should get. 

Jumbo Granite Slab Measurements

Jumbo and extra large granite slab dimensions

Some homeowners will want to construct a more oversized island in the middle of their kitchen to account for their large family or make everything look proportionate to the place. Luckily, there is a jumbo sizing that one can look at when deciding on what stoneslab size to purchase. 

A standard jumbo stone slab has a width of 64.5 inches or about 164 centimeters with a length of 131.5 inches or 334 centimeters. This is the size you want to get if you have other projects for your home that would warrant slabs, like for your granite bathroom countertops and others. 

Size of Extra Large Granite Slab

The jumbo variety is the most extensive size available from many stone manufacturers. These are granite slabs measuring 130 inches or 330 centimeters in length with a more extended width of 78 inches or 198 centimeters, although this is rare and will require careful logistics in terms of royalty and shipping freight. 

Another option for getting an even larger piece is custom sizing. There are some manufacturers that, given enough time and custom specifications, can make any homeowner’s ideal countertop size

It is also doable to cut down on project costs and reduce waste of materials by getting smaller or the exact dimensions you will need for your construction project. 

How Many Square Feet In A Slab Of Granite? 

Granite slab square footage

Knowing the square feet of a particular thing will let you know how much surface area it will cover. For a stone slab, 9 to 10 feet or 108 to 120 inches by 5 to 6 feet or 60 to 72 inches, it will typically have an area of 45 square feet or around 4.18 square meters. 

The square area is 45 square feet, but it doesn’t mean that this is all the usable yield since sometimes a particular construction or home improvement project will call for cutting the stone, which could reduce the slab’s workable surface area

What Size Do Granite Slabs Come In?

The standard granite slab, widely manufactured, will have dimensions of 9 to 10 feet or 108 or 120 inches from top to bottom with a width of 5 to 6 feet or 60 to 72 inches from side to side. Most of them are sized vertically. 

There are also jumbo stone slabs available with a width of 64.5 inches or about 164 centimeters with a length of 131.5 inches or 334 centimeters. Extra-large ones can go with sizes of 130 inches or 330 centimeters, with a more extended width at 78 inches or 198 centimeters. 

To find smaller or medium sized slabs, you must visit a stone supplier or quarry. They often have remnants or smaller pieces left over from projects that they are willing to sell at a better price.

What Is The Largest Slab of Granite Size?

The largest stone slab sizes are the jumbo or extra-large slabs. Jumbo slabs are available with a width of 64.5 inches or about 164 centimeters with a length of 131.5 inches or 334 centimeters. 

On the other hand, rare extra-large ones can go with sizes of 130 inches or 330 centimeters, with a more extended width at 78 inches or 198 centimeters. 

How Much Does A Granite Slab Weigh?

Because of their extended width and lengths and the fact that they are stone, they make for one heavy slab, and how heavy they are will depend on the material thickness you are looking to use for your home. 

Thinner stone slabs weigh at least 13 pounds per square foot, while thicker slabs can go up to 19 pounds per square foot. See our granite countertop weight guide for more details.

Granite Slab Thickness

There are two standard thicknesses for granite slabs: the 3/4 inch thick ones and the 1 1/4 thick ones. Both of these thicknesses are used widely for many granite kitchen countertops; however, the 3/4 slabs are usually laminated together to create a double-thickness. 

Any kitchen countertop using laminated-granite tops will have a thickness of 1 1/2 inches

Cost Of A Slab Of Granite

Kitchen island with granite countertop indoor plant upholstered stool chairs

A striking natural-stone countertop will cost you a little bit more money compared to other options, but its natural beauty makes it an attractive option any homeowner should consider. Homeowners will typically pay at least $34 to $75 for one square foot of slab, depending on the design or the quality of the granite

How Big Can Granite Be Without A Seam?

According to the guidelines and specifications set forth by the Marble Institute of America, seams should not be wider than 1/16 inch. It also must be filled and covered with epoxy so that the color will match the granite slab effortlessly. It is also important that the seams lay flat with a lippage not extending 1/32 inch. 

See more related content in our article about granite backsplash ideas here.

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