Professional BMI Calculator

BMI Calculator Check your Body Mass Index (BMI) instantly with our free online BMI calculator. No registration required. Enter your weight and height to determine if you are underweight, normal weight, overweight, or obese according to standard health guidelines. Supports both metric (kg/cm) and imperial (lbs/in) units. Ideal for fitness enthusiasts, students, and anyone monitoring their health. Our calculator provides fast, accurate results without saving your data. Use it on any device — desktop, tablet, or mobile. Understand your BMI category, track changes over time, and make informed lifestyle decisions with our professional, easy-to-use BMI tool.

Body Mass Index Calculator

Calculate your BMI and understand what it means for your health

Your BMI Result

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Underweight (<18.5) Normal (18.5-24.9) Overweight (25-29.9) Obese (30+)

About BMI

Body Mass Index (BMI) is a numerical value calculated from your weight and height. It provides a simple way to categorize individuals as underweight, normal weight, overweight, or obese.

BMI Categories:

  • Underweight: BMI less than 18.5
  • Normal weight: BMI 18.5 to 24.9
  • Overweight: BMI 25 to 29.9
  • Obese: BMI 30 or greater

Note: BMI is a screening tool but not a diagnostic of body fatness or health. It doesn't account for muscle mass, bone density, or overall body composition.

Check your Body Mass Index (BMI) instantly with our free online BMI calculator. No registration required. Just enter your weight and height to find out if you’re underweight, normal, overweight, or obese based on standard health guidelines. The tool works for both metric (kg/cm) and imperial (lbs/inch) units. Perfect for anyone tracking weight, fitness goals, or general health awareness. Our calculator is simple, accurate, and gives instant results. It helps you understand where you stand and whether any lifestyle changes might be needed. All data stays in your browser — nothing is saved. Whether you're starting a fitness journey or just checking in, our no-nonsense BMI calculator is here for you, free and easy to use on all devices.