Calculate and view a client's BMI


A client's Body Mass Index (BMI) is calculated using their current height and weight data. BMI is expressed in units of kg/m2  and is calculated using the following formula:

BMI = Weight(kg) / [Height (m)]2

To calculate a new client's BMI

  1. Create a new client. 
  2. On the General tab, enter their current weight and height, and for each, click Submit Entry

The client's BMI is automatically calculated and displayed on the General tab. 

Changes are saved automatically.

To update your client's BMI

  1. Open the client.
  2. On the Tracking tab, enter any new height and weight data and the date it is recorded.
  3. For each change, click Submit new entry.

The client's BMI is automatically calculated and updated on the General tab.

Changes are saved automatically.


  • BMI combines a person’s height and weight to form a measure that can help to predict their risk of developing disease.
  • Major adult BMI classifications are underweight (under 18.5 kg/m2), normal weight (18.5 to 24.9), overweight (25 to 29.9) and obese (30 or more).
  • BMI may not be an applicable measure for all people including those under 18, pregnant women, people with higher than normal levels of lean body tissue, and people of some ethnic backgrounds.
  • This index is not appropriate for children, who should be compared with reference growth charts which indicate the normal range for weight, height and weight-for-height by sex and age.
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