Weight Watchers weight assessment calculator - What is the BMI?



The Body Mass Index (BMI), is a measure for human body weight in relation to health risks, based on an individual's weight and height. BMI is not a direct measure of body fat, it is the recommended method to assess weight status. Because it expresses the weight-height relationship, BMI provides a more accurate indication of health risks associated with being overweight or obese, than using body weight alone. Calculate your BMI by starting our free assessment.

What do the BMI ranges mean?

Experts generally consider a BMI below 20 to be underweight and a BMI of 20 to 25 to be healthy. BMIs of 25 to 30 are considered overweight, while a BMI over 30 is considered obese.


Find out your healthy weight range

Answer a few quick questions and discover:

  • Your healthy weight range*
  • Your BMI (Body Mass Index)*
  • If something is standing in the way of your weight loss
  • How Weight Watchers can fit your life

If you want to know whether you're a healthy weight for your height, try our BMI calculator.

find you healthy weight

What's your healthy weight?



Losing weight doesn't have to be a daunting experience. With Weight Watchers we make sure that you start the best way possible your weight loss journey. Your healthy weight range can easily be established when checking your Body Mass Index (BMI).

Experts generally consider a BMI below 20 to be underweight and a BMI of 20 to 25 to be healthy. BMIs of 25 to 30 are considered overweight, while a BMI over 30 is considered very obese.Do not worry if you don't know how to calculate your BMI - take your free assessment above and we will calculate it for you. Once you know what a healthier weight for your height would be, you’ve taken the first step to success.

* Based on Weight Watchers healthy weight and BMI ranges

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