Calculate your Body Mass Index (BMI) easily with our free BMI calculator. Track your health, weight category, and fitness goals.
Your Body Mass Index is
You have a healthy body weight. Good job!
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is:
BMI provides a reliable indicator of body fatness for most people and is used to screen for weight categories that may lead to health problems.
BMI values are categorized to indicate potential health risks:
These categories help identify individuals who may need weight management interventions.
While useful, BMI has important limitations to consider:
BMI should be used as a screening tool, not a diagnostic measure of body fat or health.
| BMI Category | BMI Range (kg/m²) | Health Risk | Recommended Action |
|---|---|---|---|
| Severe Thinness | < 16 | High | Consult healthcare provider |
| Moderate Thinness | 16 - 17 | Moderate | Consult healthcare provider |
| Mild Thinness | 17 - 18.5 | Low | Consider weight gain |
| Normal Weight | 18.5 - 25 | Very Low | Maintain weight |
| Overweight | 25 - 30 | Low to Moderate | Consider weight loss |
| Obese Class I | 30 - 35 | Moderate | Weight loss recommended |
| Obese Class II | 35 - 40 | High | Weight loss strongly recommended |
| Obese Class III | > 40 | Very High | Immediate medical consultation |
BMI is widely used in healthcare settings for various purposes:
Healthcare providers use BMI as a quick screening tool to identify potential weight-related health issues.
BMI serves as a valuable tool in fitness and weight management:
Regular BMI monitoring helps individuals stay aware of their weight status and make informed health decisions.
BMI plays a crucial role in research and public health initiatives:
Large-scale BMI data helps identify population health trends and guide public health interventions.
BMI is used in various insurance and risk assessment contexts:
While controversial, BMI remains a factor in risk assessment due to its correlation with health outcomes.
Choose between Metric (kilograms and centimeters) or Imperial (pounds, feet and inches) units. The calculator automatically converts between systems, so you can use whichever you're most comfortable with.
Input your current weight and height accurately. For best results, measure your height without shoes and weight with minimal clothing. Use precise measurements rather than estimates for the most accurate BMI calculation.
Click "Calculate BMI" to see your results. Your BMI value will be displayed along with your weight category. The visual scale shows where you fall in the BMI spectrum, and detailed information explains what your category means for your health.
Read the detailed description of your BMI category to understand potential health risks and recommendations. Remember that BMI is a screening tool, not a diagnostic measure. Consider consulting a healthcare professional for personalized advice.