Calculate Body Mass Index (BMI) and health category based on height and weight.
📊 Underweight <18.5 · Normal 18.5–24.9 · Overweight 25–29.9 · Obese ≥30
ℹ️ BMI is a general screening measure. It doesn't account for muscle mass, age, sex, or ethnicity, and isn't used for under-18s (pediatric percentiles apply instead).
Body Mass Index (BMI) is a widely used screening tool for healthy weight ranges. The BMI Calculator computes your BMI based on height and weight, and categorizes results into underweight, healthy, overweight, or obese categories. BMI is calculated as weight (in kg) divided by height squared (in m²). While not perfect (athletes may have high BMI despite low body fat), it's a useful general screening tool for most people. Our BMI Calculator shows: your BMI number, health category (underweight, healthy, overweight, obese), healthy weight range for your height, and links to health resources. Health professionals use BMI as initial screening. Insurance companies may use BMI for rate calculation. Fitness enthusiasts track BMI as they train. Doctors discuss BMI as part of preventive health screening. The calculator supports both metric (kg/cm) and imperial (lbs/inches) units. Results include interpretation of what your BMI means and when to consult healthcare professionals.
BMI can overestimate body fat for muscular individuals since it doesn't distinguish between muscle and fat.
BMI 18.5-24.9 is considered healthy for most adults. Consult healthcare providers for individual guidance.
Standard BMI is the same for all adults. Age-adjusted BMI exists for children and adolescents.
If your BMI is outside healthy range or if you have health concerns, consult a healthcare provider.