no ketchup, its got lots of sugar (tomato is a fruit afterall) as for mustard, the spicy mustard i was eating had 2 carbs per 2 teaspoons or something like that but the mustard from burger king might be different, look on thier website for nutritional info... maybe try some mayo with it... mayo is usually pretty low in carbs (1 carb per tablespoon or something like that)