BMI Calculator
Enter your height and weight to instantly calculate your BMI and assess your health status.
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
😶🌫️
0 < BMI < 15.9
Severely Underweight
☹️
16 < BMI < 16.9
Moderately Underweight
😶
17 < BMI < 18.4
Mildly Underweight
😚
18.5 < BMI < 24.9
Normal Range
😉
25 < BMI < 29.9
Overweight
😰
30 < BMI < 34.9
Obese (Class I)
🥶
35 < BMI < 39.9
Obese (Class II)
🫣
40 < BMI < Infinity
Obese (Class III)
How to Use the BMI Calculator
1. Enter Your Height and Weight
Provide your height in centimeters and weight in kilograms to get started.
2. Click the “Calculate BMI” Button
Start the calculator to instantly check whether your weight falls within the healthy range.
3. View Your Results and Classification
Your BMI score and weight category—such as normal, underweight, or overweight—will be clearly displayed.
What Is BMI (Body Mass Index)?
BMI (Body Mass Index) is a widely used metric for evaluating the ratio between your weight and height. It is calculated by dividing your weight (kg) by the square of your height (m²). This helps to quickly identify if a person is underweight, at a healthy weight, overweight, or obese. BMI is commonly used in weight management, fitness plans, and general health assessments.
Why Is BMI Important in Health Assessment?
BMI provides a quick way to determine if your weight falls within a healthy range. A typical healthy BMI is between 18.5 and 24.9. A lower BMI may suggest nutritional deficiencies, while a higher BMI may indicate risks such as cardiovascular disease or type 2 diabetes. Regularly checking your BMI helps you monitor your health and take early action.
How to Maintain a Healthy BMI?
Maintaining a healthy BMI comes down to consistent lifestyle habits—balanced nutrition, regular sleep, and physical activity. Aim for at least 150 minutes of moderate exercise per week, such as walking, biking, or swimming, and reduce the intake of high-sugar, high-fat foods.
Who Should Not Rely on BMI Alone?
While BMI is useful for the general population, it doesn't apply well to children, pregnant women, or individuals with high muscle mass. Since it does not distinguish between muscle and fat, it's best used alongside body fat percentage, waist-to-hip ratio, or with advice from a healthcare professional.
Understanding BMI in Detail
BMI (Body Mass Index) is a globally recognized method to assess weight-related health risks. It is calculated as weight (kg) divided by height (m) squared. With this formula, you can: 1. Evaluate health risks: Extremely high or low BMI values may signal chronic disease risks or nutritional deficiencies. 2. Set personalized weight goals: Use BMI data to build effective diet and exercise plans. 3. Monitor progress: Track changes in BMI alongside waist size and body fat to optimize your overall body composition.
Benefits of Using an Online BMI Calculator
An online BMI calculator is a fast, free tool for checking your weight status. It requires only your height and weight to instantly compute your BMI. No login, app installation, or registration is needed—making it perfect for quick health checks on both desktop and mobile devices.
Why BMI Matters in Weight Management
BMI is a core standard for assessing weight-related health adopted by the World Health Organization (WHO). It helps detect excess weight, metabolic imbalance, or signs of obesity. Compared to just weighing yourself, BMI gives a more balanced perspective of your body’s proportional health.
Combining BMI with Body Fat and Waist Measurements
Using BMI alone can sometimes be misleading—especially for athletes or individuals with high muscle mass. That’s why it’s important to pair it with other indicators like body fat percentage, waist-to-hip ratio (WHR), and basal metabolic rate (BMR) for a complete view of your physical health.