BMI Calculator – Check Your Body Mass Index Instantly
Use our free BMI Calculator to quickly find out if you are underweight, healthy, overweight, or obese. Enter your height and weight to get accurate BMI results and health insights in seconds.
Enter Your Height & Weight
Simply type in your height and weight, and our BMI calculator will instantly show your Body Mass Index and weight category.
Your BMI Result
Note: This category is based on BMI standards. BMI is a screening tool and not a diagnosis. Individual factors such as age, sex, muscle mass, and overall health may influence the interpretation. Please seek medical advice for a personalized assessment.
BMI Formula, Categories & Health Impact
BMI is calculated using the formula: BMI = weight (kg) ÷ [height (m)]². Based on your result, you can see which BMI range you fall into and understand the potential health risks or benefits for each category.
Health Impact
Understand how each BMI category may affect your health and get practical tips to maintain or improve your well-being.
Uses of BMI
Body Mass Index (BMI) is widely applied in healthcare and research as a quick screening tool. While it doesn’t measure body fat directly, BMI provides valuable insights into health risks, population studies, and clinical decision-making.
Public Health Screening
BMI is commonly used in community and national health programs to identify populations at risk of obesity, malnutrition, and related conditions.
Clinical Assessment
Doctors often use BMI as part of routine check-ups to evaluate weight status, monitor trends, and guide further diagnostic tests or interventions.
Research & Policy
Researchers rely on BMI to study weight-related health outcomes, track global trends, and inform public health policies.
Limitations of BMI
While BMI is a useful screening tool, it has important limitations. It cannot fully reflect body composition, and its accuracy varies across age groups, genders, and certain populations such as athletes or pregnant women.
Muscle vs Fat
BMI cannot differentiate between muscle mass and body fat, which may lead to misclassification of muscular individuals as overweight or obese.
Age & Special Populations
BMI may not be accurate for children, elderly people, or pregnant women, as their body composition and health risks differ from standard adult ranges.
Individual Variations
Factors such as body shape, ethnicity, and fitness level can affect BMI readings, making it less reliable for certain individuals.
How to Improve or Maintain a Healthy BMI
While BMI is a useful screening tool, it has important limitations. It cannot fully reflect body composition, and its accuracy varies across age groups, genders, and certain populations such as athletes or pregnant women.
Explore Foods & Nutrition After Knowing Your BMI
Understanding your BMI is just the first step. Discover the nutritional content of foods to make informed diet choices that support a healthy weight and overall well-being.
Frequently Asked Questions
Find answers to the most common questions about BMI calculation, its accuracy, and what your results mean for your health.
What is BMI?
BMI (Body Mass Index) is a number calculated from your height and weight to estimate body fat and categorize weight status.
How is BMI calculated?
BMI is calculated using the formula: BMI = weight (kg) ÷ [height (m)]².
Are BMI results accurate for everyone?
BMI provides a general guideline, but it may not be accurate for athletes, pregnant women, or elderly individuals, as it does not differentiate between muscle and fat.
What BMI range is considered healthy?
A BMI between 18.5 and 24.9 is considered normal and generally indicates a healthy weight.
What should I do if my BMI is outside the normal range?
If your BMI is underweight, overweight, or obese, consider adjusting your diet, increasing physical activity, and consulting a healthcare professional for personalized advice.