⚖️ BMI Calculator

What is the BMI Calculator?

Body Mass Index (BMI) is a number calculated from your height and weight that screens for underweight, normal weight, overweight, and obese categories. This calculator accepts either metric (kg, cm) or imperial (lbs, ft/in) units and returns your BMI score, category, healthy weight range, and how far you are from that range, plus a visual scale showing where you fall.

How to Use It

Choose the Metric or Imperial tab, enter your height, weight, age, and sex, and click "Calculate BMI." The result shows your BMI score, category (Underweight, Normal, Overweight, or Obese), the healthy weight range for your height, and how much weight you'd need to gain or lose to reach it.

When to Use It

Use it as a quick check on whether your current weight falls in a typical healthy range for your height, to track progress over time alongside diet or exercise changes, or before a doctor's visit to have a baseline number ready. BMI is a screening tool, not a diagnosis — it doesn't account for muscle mass, fat distribution, age, or ethnicity, so a very muscular person can score "overweight" despite low body fat.

Who Benefits

Anyone tracking general health trends, people starting a weight management plan, and patients preparing basic health metrics before a medical appointment. For a full picture, pair it with body fat percentage and consult a healthcare provider for personalized advice.