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Shape Tools – Body Mass Index (BMI) Calculator

Body Mass Index (BMI) is a measure of a person’s weight in relation to height, not body composition.

BMI values apply to both men and women, regardless of age or frame size. Use this information, along with other health indices, to assess your need to adjust your weight.

1. Enter your weight:

2. Enter your height:

Your BMI:


  • between 18.5 and 25 is considered ideal
  • below 18.5 indicates underweight
  • between 25 and 30 indicates overweight
  • 30 or higher, experts consider an indicator of obesity

Need some help getting closer to your ideal BMI? Check out:

1. Hybrid Spinning Classes – The coolest cycle-workouts you’ve never heard of

2. The simplest, most effective home workout you’re not doing

3. 5-Minute Workout from Jessica Alba’s and ScarJo’s trainer