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Xtreme Abs Nutrition • Health Calculator

Know Your BMI at a Glance

Enter your height and weight to estimate your Body Mass Index, view the adult BMI category and see an estimated healthy-weight range for your height.

🧮 BMI Calculator

Metric and Imperial units supported
CM
Enter height in centimetres.
KG
Enter current body weight.
CM
Additional context only; waist is not used to calculate BMI.
FT
IN
LB
IN
Important: BMI is a screening measure based on height and weight. It does not directly measure body fat or account for muscle mass, bone mass, age or other individual factors.
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Your BMI Result

Enter your height and weight and select Calculate My BMI to see your result.

BMI chart

What is BMI?

Body mass index, or BMI, gives an indication of body size. BMI is calculated using weight divided by height squared.

Along with several other factors, BMI can help estimate health risk. It is not a complete measure of health.

Adult BMI categories

  • Below 18.5: Underweight
  • 18.5–24.9: Healthy weight
  • 25.0–30.0: Overweight
  • Above 30: Obese

BMI has limitations

BMI does not take into account body composition, including fat, muscle and bone. It may therefore be less useful for athletes or people with a lot of muscle.

The original page also notes limitations for pregnant women, people aged 19 or younger and people with conditions affecting body-fluid levels.

Use your result wisely

Waist measurement can provide additional context but is not part of the BMI calculation. For individual advice about weight, nutrition or health risk, speak with an appropriately qualified healthcare professional.

Important: This calculator provides an estimate and is not a diagnosis or a substitute for professional medical advice. BMI interpretation can vary between individuals and populations. This page is primarily an adult screening tool and should not be used to assess children or teenagers without appropriate age- and sex-specific guidance.