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This calculator is designed to help you calculate your Body Mass Index (BMI). Optionally you can combine your BMI with your waist measurement to calculate your health status and risks.

  1. Choose your system of measurement - metric or US (Imperial).
  2. Enter your height and weight data.
  3. If you want a more detailed health result, enter your waist measurement and gender.
  4. Click the Calculate button to see your results.

You may also like to try these calculators:

Click here to try our other Health/Fitness Calculators.

  • Invalid height measurement
  • Invalid weight measurement
  • Invalid waist measurement
  • Invalid gender

You can skip this section if you prefer.


BMI Range

35 and above Extremely Obese
30 - 34.9 Obese
25 - 29.9 Overweight
18.5 - 24.9 Healthy Weight
18.5 and under Underweight

Your BMI is  

BMI Result

A healthy weight for your height is between -- and  .

Note: The healthy BMI range can be higher for some groups such as older people, or lower for other groups such as Indigenous or Asian backgrounds. Regardless of your weight or body type, good diet and exercise can improve your health.

Waist Range

102 cm and above High Risk
94 - 102 cm Medium Risk
94 cm and below Low Risk


  1. Body mass index (BMI) measures total body fat as a proportion of total body weight.
  2. A healthy adult's BMI should range between 20 and 25, although older people can have a slightly higher BMI range and still be considered healthy.
  3. Muscle is heavier than fat, so results from these calculations may not always be accurate. This is one reason why waist measurement is also an important tool when checking your BMI.
  4. Weight around your waist is often called "toxic fat" and is more dangerous than weight in other areas such as hips or thighs.
  5. This BMI calculator is only a guide. Please consult your doctor if you have any health concerns or need a detailed medical checkup.




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