Check your BMI and weight category instantly.
Our free BMI Calculator helps you quickly find your Body Mass Index, a widely used screening measurement that estimates whether your weight is in a healthy range relative to your height. BMI is calculated by dividing weight by the square of height, and while it does not directly measure body fat, it is one of the most commonly used general indicators by health professionals worldwide for a quick, initial assessment of weight status.
This calculator supports both metric units (kilograms and centimeters) and imperial units (pounds, feet, and inches), so you can use whichever measurement system you are most comfortable with. Simply select your preferred unit system, enter your height and weight, and the tool will instantly calculate your BMI along with your weight category: Underweight, Normal Weight, Overweight, or Obese, based on standard World Health Organization BMI classification ranges.
It is worth noting that BMI is a general screening tool and does not account for factors such as muscle mass, bone density, overall body composition, age, or sex. Athletes and highly muscular individuals, for example, may show a higher BMI despite having low body fat, since muscle weighs more than fat. Because of this, BMI results should be considered a starting point for understanding general weight status rather than a complete diagnostic measure, and anyone with health concerns about their weight should consult a qualified healthcare professional for a full assessment.
This tool is completely free to use, works instantly on any device, and does not store or share any of the health information you enter. It is useful for general health tracking, fitness goal setting, or simply satisfying curiosity about where your current measurements fall on the standard BMI scale.
Yes, this tool is completely free with no signup, login, or limit on how many times you can use it.
BMI is a useful general screening tool but does not directly measure body fat percentage. It does not account for muscle mass, bone density, or body composition, so results should be interpreted as a general indicator rather than a precise diagnosis.
According to standard classification, a BMI between 18.5 and 24.9 is generally considered a normal, healthy weight range for most adults.
Yes, this calculator supports both metric (kg/cm) and imperial (lb/ft-in) units. Simply select your preferred unit system before entering your measurements.
If you have concerns about your weight or overall health, it is always best to consult a qualified healthcare professional, as they can provide a complete assessment beyond what a BMI calculation alone can offer.