About BMI Calculator

Our free BMI calculator helps you find your Body Mass Index using your height and weight in metric (kg, cm) or imperial (lbs, ft/in) units. BMI is a simple screening tool that indicates whether you are underweight, normal weight, overweight, or in an obesity range. It is not a diagnostic of body fat or health—use it as a general guide. Toolinho offers free health and fitness calculators with no signup.

Enter your height and weight above to get your BMI and category. The tool shows a visual gauge and healthy ranges. For a full health assessment, consult a doctor. Try our other free tools: calorie calculator, age calculator, and unit converter.