BMI Calculator
Your BMI Result
What is BMI and Why It Matters – Free Online Calculator by ClickGenieKit
Body Mass Index (BMI) is a simple calculation using a person's height and weight to assess whether their weight is in a healthy range. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared.
BMI is a useful screening tool to identify potential weight problems for adults. While it doesn't measure body fat directly, research has shown that BMI correlates with more direct measures of body fat. It's a quick, inexpensive way to classify weight categories that may lead to health problems.
The World Health Organization (WHO) classifies BMI into four main categories:
- Underweight: BMI less than 18.5
- Normal weight: BMI 18.5 to 24.9
- Overweight: BMI 25 to 29.9
- Obese: BMI 30 or greater
Our free BMI calculator requires no login and works offline once loaded. It's mobile-friendly so you can check your BMI anytime, anywhere. The tool supports both metric (kilograms and centimeters) and imperial (pounds and feet/inches) measurements.
For best results, we recommend checking your BMI weekly to monitor changes. Remember that BMI is just one indicator of health - it doesn't account for muscle mass, bone density, or overall body composition. Always consult with a healthcare professional for a comprehensive health assessment.
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