Understanding Your Body Mass Index
Body Mass Index (BMI) is a simple measure that uses your height and weight to estimate whether your weight is in a healthy range. While it is not the only measure of health, it is a useful starting point for understanding your body composition.
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When Should You Use a BMI Calculator?
Use a BMI calculator to assess your weight category, track fitness progress, prepare for medical checkups, or maintain a healthy lifestyle.
Is BMI Different for Men, Women, and Children?
BMI ranges are generally similar for adult men and women, but it can be interpreted differently depending on body composition and health context. For children and teens, BMI should be assessed using age- and sex-based BMI percentile charts rather than adult categories.
BMI Formula Explained
BMI = weight (kg) / height (m)²
Example: If you weigh 70 kg and your height is 1.75 m, then BMI = 70 / (1.75×1.75) = 22.86.
Our calculator does the math for you. Just enter your details to get your BMI score instantly.
Interpreting Your BMI Result
Use the chart below to see which category your score falls into, based on WHO recommendations:
| BMI Range | Weight Status |
|---|---|
| Below 18.5 | Underweight |
| 18.5 – 24.9 | Normal weight |
| 25.0 – 29.9 | Overweight |
| 30.0 and above | Obesity |
Limitations of BMI
BMI does not distinguish between fat and muscle mass. Very muscular individuals may have a high BMI but a healthy body composition. It may also not be accurate for the elderly and pregnant women. Always consult a healthcare professional for a full assessment.
Disclaimer: This BMI calculator is for informational purposes only. It is not a substitute for professional medical advice, diagnosis, or treatment.
Frequently Asked Questions
What is a healthy BMI?
A BMI between 18.5 and 24.9 is generally considered healthy for most adults.
Is BMI accurate for everyone?
No. BMI can be misleading for athletes, bodybuilders, pregnant women, and the elderly. It should be used as a general guide alongside other health assessments.
How can I improve my BMI?
A balanced diet and regular physical activity are the best ways to move toward a healthy BMI. We recommend consulting with a healthcare professional for a plan tailored to you.