Free BMI Calculator — Body Mass Index Calculator

Calculate your Body Mass Index instantly — metric & imperial, with health tips and ideal weight range.

BMI Calculator

Body Mass Index — Know your healthy weight range

Height

Weight

Gender (optional)

Age (optional)

Please enter valid height and weight.

BMI Scale

Underweight

Normal

Overweight

Obese

1018.5253040+

Underweight (<18.5)

Normal (18.5–24.9)

Overweight (25–29.9)

Obese (≥30)

⚖️

—

Min Healthy Weight

✅

—

Max Healthy Weight

📉

—

Weight to Lose

🎯

21.7

Ideal BMI Target

Health Recommendations

Disclaimer: BMI is a screening tool, not a diagnostic measure. It does not account for muscle mass, bone density, fat distribution, or other health factors. Consult a healthcare professional for medical advice.

BMI Categories Reference Table

BMI Range	Category	Health Risk

BMI Calculator is a free online tool that calculates your Body Mass Index (BMI) instantly in your browser. Enter your height and weight in metric or imperial units to get your BMI score, category, healthy weight range, and personalized health tips. No data is ever sent to any server — everything is calculated locally.

How to use: Select your unit system (metric or imperial), enter your height and weight, then click Calculate BMI. Your BMI score, category, visual gauge, and health information appear instantly.