🧮 BMI Calculator
ℹ️ Modify the values and click Calculate to get your BMI results
BMI Calculator
cm
kg
Results
BMI Result
BMI = 20.1 kg/m² (Normal)
BMI = 20.1
- • Healthy BMI range: 18.5 kg/m² - 25 kg/m²
- • Healthy weight for your height: 59.9 kg - 81.0 kg
- • BMI Prime: 0.8
Health Advice:
Great! You have a healthy weight. Keep maintaining your current lifestyle.
Our free BMI Calculator helps you determine your Body Mass Index instantly by evaluating your body weight in relation to your height. It provides a reliable starting point to see if you fall within a healthy weight range and acts as a screening tool for potential weight-related health risks.
How to Use This Calculator
1
Toggle your preferred measurement unit between US Customary or Metric.
2
Enter your age and gender to ensure accurate comparative health data.
3
Type in your exact current height for precise mathematical calculation.
4
Enter your current body weight as accurately as possible.
5
Click "Calculate ▶" to view your BMI category, BMI Prime score, and chart.
Standard BMI Categories (Adults)
| Classification | BMI Range (kg/m²) | Health Risk Level |
|---|---|---|
| Underweight | Below 18.5 | Elevated |
| Normal Weight | 18.5 – 24.9 | Low Risk |
| Overweight | 25.0 – 29.9 | Elevated |
| Obesity | 30.0 and Above | High to Very High |
Frequently Asked Questions
While BMI is a widely accepted screening tool, it does not directly measure body fat. It cannot differentiate between muscle mass, bone density, and fat. Highly muscular athletes may have a high BMI but very low overall body fat.
No, the mathematical formula for calculating BMI is exactly identical for both men and women. However, because women generally carry naturally higher body fat percentages than men, the clinical interpretation of the score can sometimes vary in a medical setting.
BMI Prime compares your current BMI against the upper limit of the "Normal" category (a BMI of 25). A BMI Prime score between 0.74 and 1.0 indicates a healthy weight, while anything above 1.0 suggests you are overweight.
Lowering your BMI safely requires a consistent combination of a balanced, calorie-controlled diet, regular cardiovascular exercise, resistance training, and adequate sleep. Always consult a healthcare provider or registered dietitian before starting a new weight loss plan.
Want to Learn Everything About Your BMI?
Read our complete guide to learn how the formulas work, understand potential health risks, and discover practical tips to maintain a healthy weight.