BMI Classification Chart
| BMI Range | Classification | Health Risk |
|---|---|---|
| Below 18.5 | Underweight | Possible nutritional deficiency and osteoporosis |
| 18.5 - 24.9 | Normal weight | Low risk (healthy range) |
| 25.0 - 29.9 | Overweight | Moderate risk of developing heart disease, high blood pressure, stroke, diabetes |
| 30.0 - 34.9 | Obese Class I | High risk of developing heart disease, high blood pressure, stroke, diabetes |
| 35.0 - 39.9 | Obese Class II | Very high risk of developing the above diseases |
| 40.0 and above | Obese Class III | Extremely high risk of developing the above diseases |
About BMI
Body Mass Index (BMI) is a measure of body fat based on height and weight that applies to adult men and women.
Limitations: BMI doesn't account for muscle mass, bone density, overall body composition, and racial/ethnic differences. Athletes with high muscle mass may have a high BMI but not have excess fat. It's always best to consult with a healthcare provider for a comprehensive health assessment.
BMI Calculator – Calculate Your Body Mass Index for Free
Introduction to BMI Calculator:
Maintaining a healthy weight is crucial for overall well-being. One of the most widely used tools to assess whether your weight is in a healthy range is the Body Mass Index (BMI) Calculator. At Calculator91.com , we provide a free, accurate, and easy-to-use BMI calculator to help you determine your BMI instantly.
BMI is a simple numerical measurement that evaluates whether a person has a healthy body weight based on their height and weight. It is a useful screening tool to identify potential weight-related health risks.
What is BMI?
Body Mass Index (BMI) is a value derived from an individual’s weight and height. It provides a general indication of whether a person is underweight, normal weight, overweight, or obese.
• The formula to calculate BMI is:
BMI = {Weight (kg)} / {(Height (m))^2}
• For those using pounds and inches, the formula is:
BMI = {Weight (lbs)} / {(Height (in))^2} × 703
BMI Categories and their Meaning:
The World Health Organization (WHO) classifies BMI into the following categories:
★ BMI Range: Below 18.5
Category: Underweight
Health Implications: Possible nutritional deficiency, weakened immunity
★ BMI Range: 18.5 – 24.9
Category: Normal Weight
Health Implications: Healthy weight range, lower risk of chronic diseases
★ BMI Range: 25.0 – 29.9
Category: Overweight
Health Implications: Increased risk of heart disease, diabetes
★ BMI Range: 30.0 and above
Category: Obese
Health Implications: High risk of severe health conditions
Why is BMI Important?
Calculating your BMI helps you understand whether your weight is within a healthy range. Here’s why BMI matters:
1. Assesses Weight-Related Health Risks
A high BMI may indicate excess body fat, increasing the risk of:
• Heart disease
• Type 2 diabetes
• High blood pressure
• Stroke
• Certain cancers
A low BMI may signal malnutrition, osteoporosis, or a weakened immune system.
2. Helps in Setting Fitness Goals
Whether you want to lose, gain, or maintain weight, knowing your BMI helps in setting realistic fitness goals.
3. Used by Health Professionals
Doctors and nutritionists use BMI as a preliminary screening tool to assess potential health risks related to weight.
How to Use Our Free BMI Calculator
At Calculator91.com , our BMI Calculator is simple and user-friendly. Follow these steps:
1. Enter Your Height – Provide your height in centimeters (cm), meters (m), or feet and inches (ft & in).
2. Enter Your Weight – Input your weight in kilograms (kg).
3. Click “Calculate BMI“– Get instant results with your BMI score and category.
Our tool also provides personalized insights based on your BMI, helping you understand whether you need to make lifestyle changes.
Limitations of BMI
While BMI is a useful screening tool, it has some limitations:
• Does Not Measure Body Fat Directly – Athletes with high muscle mass may have a high BMI but low body fat.
• Does Not Account for Fat Distribution – Visceral fat (around organs) poses higher health risks than subcutaneous fat.
• May Not Be Accurate for All Age Groups – BMI interpretations differ for children, teens, and older adults.
For a more comprehensive health assessment, consider additional metrics like waist-to-hip ratio, body fat percentage, and metabolic tests.
Tips for Maintaining a Healthy BMI
If your BMI falls outside the normal range, here are some actionable tips:
★ For Underweight Individuals (BMI < 18.5)
• Increase calorie intake with nutrient-dense foods (nuts, dairy, lean meats).
• Strength training to build muscle mass.
• Consult a doctor if weight loss is unintentional.
★ For Normal Weight Individuals (BMI 18.5 – 24.9)
• Maintain a balanced diet and regular exercise.
• Monitor weight periodically to stay within the healthy range.
★ For Overweight/Obese Individuals (BMI ≥ 25)
• Adopt a calorie-deficit diet (more vegetables, lean proteins, whole grains).
• Engage in 150 minutes of moderate exercise per week (walking, cycling, swimming).
• Seek guidance from a nutritionist or fitness expert.
Conclusion:
Understanding your BMI is the first step toward a healthier lifestyle. At Calculator91.com , our free BMI Calculator provides quick and accurate results, helping you assess your weight status and take necessary actions.
Whether you need to lose, gain, or maintain weight, monitoring your BMI regularly can guide you toward better health decisions. Start using our BMI Calculator todayand take control of your well-being!