Body Mass Index (BMI) is a quick screening tool used to estimate whether a person has a healthy body weight for their height. This BMI calculator gives an instant BMI score based on the height and weight values you enter in metric or imperial units. It’s intended as a general guide and follows commonly accepted BMI categories used by health professionals.
Choose Metric or Imperial, enter your height and weight, then click Calculate. The tool displays your BMI score and highlights which category you fall into: underweight, healthy weight, overweight, or obesity. Use the Reset button to clear inputs.
BMI is a simple ratio of weight to height and does not measure body fat directly. It does not distinguish between muscle and fat, and may misclassify very muscular people, older adults or children. For personalized assessment—especially if you are an athlete, pregnant, or have a medical condition—consult a healthcare professional.
This calculator provides general information and is not a substitute for professional medical advice, diagnosis, or treatment. Always seek the guidance of a qualified health provider with any questions you may have regarding a medical condition.