BMI Calculator | Calculate Your Body Mass Index

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How to Calculate BMI

Adult BMI Calculation Formula

BMI is calculated using your weight and height. Metric: weight(kg) / height(m)². US: weight(lbs) × 703 / height(in)².

Steps to Input Your Data

1. Select your preferred unit system. 2. Enter your height and weight accurately. 3. Click Calculate to get your BMI result.

Common Input Mistakes to Avoid

Do not use estimated values. Ensure correct unit selection and decimal points for accurate BMI calculation.

What Your BMI Result Means

BMI Result Interpretation

BMI indicates weight status relative to height. It is a screening tool for adult weight categories.

BMI Categories & Standards

Adult BMI Classification

Underweight: Below 18.5

Normal: 18.5 – 24.9

Overweight: 25.0 – 29.9

Obese: 30.0 and above

BMI Frequently Asked Questions

Is BMI Accurate for Everyone?

BMI is a general screening tool. It may not be accurate for athletes, pregnant people, or those with high muscle mass.

How to Use BMI for Health

Use BMI as a starting point. Consult a healthcare professional for a full health assessment.