How Much Is A Junior Frosty At Wendy'S. Frosty with any purchase every day until the end of the year. The size with the fewest calories is the junior vanilla frosty (190 calories), while the large vanilla frosty contains the most calories (570 calories).

A wendy’s junior chocolate frosty contains 200 calories, 5 grams of fat and 33 grams of carbohydrates. The frosty menu allows you to choose either a chocolate or vanilla frosty and then order the size that is right for you.