There are about 100 calories in each tablespoon of butter. With those calories, each tablespoon of butter has around 0.4 oz. of fat and about 0.25 oz. of saturated fat. You can get some idea of what those figures mean by comparing them to the same figures for vegetable oil, 120 calories per tablespoon, with about 0.5 oz. of fat but only 0.05 oz. of saturated fat. The take away, I think, is, the less butter or vegetable oil used, the better.