BMI Calculator – Check Your Body Mass Index Fast
Enter your weight and height to calculate your BMI instantly and understand your health range.
How to Use This Tool
- Choose between Metric (kg/cm) or Imperial (lbs/inches) units
- Enter your weight and height accurately
- Click "Calculate BMI" to get your Body Mass Index
- BMI is a screening tool - consult healthcare professionals for medical advice
Your BMI Result
Enter your weight and height to calculate BMI
Understanding BMI
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on height and weight. It's used as a screening tool to identify possible weight problems in adults.
Important Note
BMI is not a diagnostic tool. It doesn't account for muscle mass, bone density, or overall body composition. Consult healthcare professionals for personalized advice.
What is BMI Calculator?
Free online BMI Calculator to measure body mass index instantly. Track weight, health, and fitness goals with accurate BMI results.
The BMI Calculator is a free online tool that helps you measure your Body Mass Index instantly. BMI is a widely used health indicator that evaluates whether your weight is healthy relative to your height. By simply entering your weight and height, the tool calculates your BMI and categorizes it into underweight, normal, overweight, or obese. This makes it an essential resource for anyone tracking health, fitness, or diet goals. It’s especially helpful for individuals planning weight management programs, trainers monitoring clients, and healthcare professionals conducting health assessments. The calculator follows standard World Health Organization (WHO) guidelines for accuracy. Since it runs directly in your browser, no data is stored, making it private and secure. While BMI is not a complete measure of health, it provides a quick overview of body composition trends and helps guide lifestyle decisions such as diet and exercise planning. Use it regularly to track your progress and maintain a healthier lifestyle.
Key Benefits
How to Use BMI Calculator
- 1 Enter your weight in kilograms or pounds.
- 2 Enter your height in centimeters or feet.
- 3 Click "Calculate" to instantly view your BMI.
- 4 Read the BMI result and category provided.
- 5 Use the information to track or adjust your health goals.
Common Use Cases
Pro Tips & Best Practices
Troubleshooting
BMI shows unrealistic values
Double-check that height and weight units are entered correctly.
Tool not responding
Refresh the page and ensure your browser supports JavaScript.
Frequently Asked Questions
Is BMI a perfect measure of health?
Not entirely. It gives a quick indication but doesn’t account for muscle mass or body composition.
Can children use this BMI calculator?
Yes, but children’s BMI is measured differently. This tool is best for adults.
How often should I check my BMI?
Every few weeks if you are actively working on weight management.
Does this BMI Calculator save my data?
No, all calculations are processed instantly in your browser.
Is it free to use?
Yes, it’s completely free with no restrictions.