Body Mass Index or BMI is a simple measure used to assess if a person has a healthy body weight for their height. It is a useful tool for understanding if you are underweight normal weight overweight or obese. A BMI Calculator helps you find this number quickly and easily.
BMI Calculator
Compute body mass index using metric or imperial units and see WHO classification
Calculator
Disclaimer This calculator provides approximate BMI only It does not replace medical or nutritional advice Consult a health professional for personal assessment
What is a BMI Calculator
A BMI Calculator is an online or physical tool where you enter your weight and height. The calculator then uses a formula to find your BMI value. This value helps you know your weight category based on global health standards.
Why Use a BMI Calculator
Using a BMI Calculator is helpful because
- It gives a quick assessment of your weight status
- Helps you monitor changes in your weight over time
- Guides you to take steps for better health if needed
- Is used by health professionals to evaluate health risks
- Supports decisions about diet exercise and lifestyle
How BMI is Calculated
BMI is calculated by dividing your weight in kilograms by the square of your height in meters. The formula looks like this
BMI = weight (kg) ÷ height (m) × height (m)
The calculator does this instantly when you input your measurements.
BMI Categories
Based on your BMI value you fall into one of these categories
- Underweight less than 18.5
- Normal weight 18.5 to 24.9
- Overweight 25 to 29.9
- Obese 30 and above
Knowing your category can help you understand your health risks.
How to Use a BMI Calculator
Using a BMI Calculator is simple. You need to
- Enter your weight in kilograms or pounds
- Enter your height in centimeters or feet and inches
- Press the calculate button
- View your BMI number and the weight category it belongs to
Some calculators also provide health advice based on your result.
Benefits of Using a BMI Calculator
- Quick and easy to use anywhere anytime
- Helps raise awareness about healthy weight
- Supports weight management goals
- Useful for screening in health check-ups
- Encourages a balanced diet and regular exercise
Important Notes
- BMI does not measure body fat directly
- It may not be accurate for athletes pregnant women or elderly people
- Always consult a healthcare professional for a full health assessment
- Use BMI as one of many tools to monitor your health