BMI Calculator

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BMI Calculator – Know Your Body Mass Index

Understanding your health starts with knowing your Body Mass Index (BMI). Use our free online BMI calculator to check whether your weight falls within a healthy range for your height and age.

 ✅ What is BMI?

BMI (Body Mass Index) is a simple calculation based on your height and weight. It helps determine if you are underweight, healthy weight, overweight, or obese. While it’s not a diagnostic tool, it gives you a good starting point to assess your overall health.


How is BMI Calculated?

The BMI formula is:
BMI = Weight (kg) / Height (m²)
Or in pounds and inches:
BMI = (Weight in pounds / Height in inches²) × 703

Our calculator does the math for you instantly. Just enter your weight and height in the fields above and hit “Calculate.”


BMI Categories (For Adults)

BMI RangeCategory
Below 18.5Underweight
18.5 – 24.9Normal Weight
25.0 – 29.9Overweight
30.0 and aboveObese

Note: These categories are based on WHO standards for adults aged 18 and older.


Why BMI Matters

  • Helps identify health risks related to being underweight or overweight
  • Used by doctors to screen for potential health conditions
  • Offers a quick snapshot to help track weight management goals

BMI Limitations

While BMI is a useful screening tool, it does not consider:

  • Muscle mass vs. fat (e.g., athletes may have high BMI but low body fat)
  • Age, gender, and body composition
  • Waist circumference or fat distribution

For a complete health assessment, combine BMI with other metrics like body fat percentage, waist-to-hip ratio, and lifestyle factors.


What To Do Next?

  • If your BMI is too high or low, don’t panic. Use this insight to set realistic health goals.
  • Explore our nutrition guides, workout plans, and expert articles to help you move toward your ideal weight.

Your health journey begins with awareness.
Start with your BMI — and let Fitness Vidya guide you every step of the way.

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