Answer: Even if you feel you are using many of these packets a day, every day, the amount needed to sweeten food and beverages is so small it is virtually zero calories. Most people do not use more than what is needed to sweeten their food and beverages, and therefore would not significantly increase their calories consumed. In fact Splenda™ does not contain any calories whereas a teaspoon of aspartame (Equal) contains 10.56 calories, which is more than enough to sweeten a week’s worth of basically anything.