How to Use This BMI Calculator
- Enter your height in centimeters.
- Enter your weight in kilograms.
- Click the “Calculate BMI” button.
- Instantly see your BMI score and weight category.
BMI Calculator
BMI Categories
- Below 18.5 – Underweight
- 18.5 to 24.9 – Normal weight
- 25.0 to 29.9 – Overweight
- 30.0 and above – Obese
Free Online BMI Calculator – Check Your Body Mass Index Instantly
Looking for a quick and easy way to calculate your BMI? Use our free online BMI calculator to find out your Body Mass Index and understand what it means for your health. Whether you're monitoring weight loss, fitness progress, or just curious about your body composition, this tool gives you fast, accurate results in seconds.
What Is BMI?
BMI (Body Mass Index) is a simple calculation using your height and weight to estimate body fat. It's widely used by health professionals to categorize individuals into different weight classes: underweight, normal, overweight, or obese. The Centers for Disease Control and Prevention provides detailed information on how BMI is used to assess weight and health.
The formula is:
BMI = weight (kg) / [height (m)]²
Why BMI Matters
Your BMI gives you a quick snapshot of your overall health risk. Maintaining a healthy BMI may reduce the risk of chronic conditions such as:
- Heart disease
- High blood pressure
- Type 2 diabetes
- Certain types of cancer
Learn more about BMI from the UK National Health Service.
Frequently Asked Questions (FAQs)
Is BMI a good indicator of health?
BMI is a useful general guide, but it doesn’t account for muscle mass or body composition. For a more complete health assessment, talk to a healthcare provider.
What’s the ideal BMI?
According to the World Health Organization, a healthy BMI is between 18.5 and 24.9 for most adults. This range is considered healthy according to the World Health Organization.
Can BMI be used for children?
BMI for children is measured differently and includes age and sex in the calculation. This calculator is intended for adults only.
Final Tip
Bookmark this page and check back regularly to track your progress. Keeping your BMI in the healthy range is a simple way to stay on top of your wellness goals. You can also try the official BMI calculator from the NIH for a government-verified result.