BMI Calculator & Body Mass Index Checker

How to Use the MeddyLab BMI Calculator

The BMI calculator uses your weight and height to estimate your Body Mass Index. It divides your weight in kilograms by your height in metres squared. The result gives a quick screening number that can help you understand whether your weight falls within a commonly used underweight, healthy weight, overweight or obesity range.

BMI can be useful when you want a simple starting point, but it should not be the only thing you use to judge your health. Your age, sex, muscle mass, pregnancy status, medical history, waist circumference, blood pressure and blood sugar can all affect the bigger picture.

Understanding Your BMI Category

A BMI below 18.5 is commonly grouped as underweight. A BMI from 18.5 to 24.9 is commonly grouped as healthy weight. A BMI from 25 to 29.9 is commonly grouped as overweight, while 30 and above is commonly grouped as obesity. These ranges are only screening categories, not final medical conclusions.

What to Do After Checking Your BMI

Use your BMI result as a starting point. If your result is outside the healthy range, you may want to review your meals, physical activity, sleep, stress level and routine health checks. If you have symptoms, rapid weight change, high blood pressure, diabetes risk or any ongoing medical condition, speak with a qualified healthcare professional.