BMI Calculator
Calculate your Body Mass Index and see which healthy weight range you fall into.
BMI Categories
⚠️ Important Note
BMI is a screening tool and doesn't directly measure body fat or health. Muscle weighs more than fat, so athletes may have a high BMI despite being healthy. Consult a healthcare professional for personalized health advice.
BMI Formula
Metric: BMI = weight (kg) / height² (m²)
Imperial: BMI = [weight (lbs) / height² (in)] × 703
How it works
Metric: BMI = weight (kg) / height² (m²) Imperial: BMI = [weight (lbs) / height² (in)] × 703 Example: Weight: 70 kg, Height: 1.75 m BMI = 70 / (1.75 × 1.75) = 22.9 (Normal Weight)
The BMI calculator instantly calculates your Body Mass Index using your weight and height. BMI is a simple screening tool that helps classify weight ranges. Enter your measurements in metric (kg, cm) or imperial (lbs, inches) units and instantly see your BMI category.
Why this matters
BMI is a widely used screening tool for assessing weight-related health risks. It helps identify whether someone is underweight, normal weight, overweight, or obese. However, BMI is just one indicator of health—muscle mass, bone density, and overall fitness also matter significantly.
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The complete guide to bmi calculator
Formulas, examples, and tips explained in plain English