Get Started Calculate your BMI

The Special K Confidence Challenge is designed for people who are overweight, i.e. with a BMI (Body Mass Index) greater then 25.

If your BMI is between 18 and 25, you're already within a healthy weight range so the Challenge might not be suitable for you. However, this shouldn't stop you from starting the day right with a bowl of Special K for breakfast. It's a delicious way to maintain a healthier, livelier you!

To find out your BMI, simply enter your details and leave the rest to the Kellogg's BMI Calculator!

enter your weight enter your height