The average granite countertop will cost between $50 and $100 per square foot. Including installation costs, it can run as high as $200 per square foot.
One major factor in the cost of granite countertops is the thickness of the granite. A standard granite slab is about one and a quarter inches thick. But if you get a thinner slab of three quarters of an inch, it will still be long-lasting and easy to clean, but at a cheaper price.
Another way to reduce the cost is to use granite tiles instead of a granite slab. With fine enough grout lines, granite tiles can blend together so seamlessly that it looks like a single piece. But as compared to a heftier price tag attached to granite slabs, tile costs up to 60 percent less.