In my country (Brazil), sucralose comes in this two forms, liquid and powder.
Looking on the nutritional table, liquid sucralose have no significant amount of carbohydrates or kcal; On the powder sucralose says that have about 4kcal/g and about ~1g of carbohydrates(Basically equal to sugar) per g of serving.
There is any chemical difference in the powdered form that makes it been broken down to be used as energy? Or powdered sucralose is basically sugar with a little amount of actual sucralose? Or the chemical substance is the same but described differently
Side note: I've seen the same pattern in other types of recommended (to high blood sugar patients) powdered sweetener with 4kcal/g and ~1g of carbohydrates per g of serving. With the argument that's better than actual sugar.