Рассчитайте your Body Mass Index (BMI) with multiple classification standards. Get health recommendations and ideal weight range. Только на стороне клиента.
Body Mass Index (BMI) is a simple index of weight-for-height that is commonly used to classify underweight, overweight, and obesity in adults. It is defined as a person's weight in kilograms divided by the square of their height in meters (kg/m²). This calculator supports multiple international classification standards and provides personalized health recommendations. All calculations happen in your browser — no data is sent to any server.
BMI (Body Mass Index) is a simple measurement of body fat based on your height and weight. It is calculated by dividing your weight in kilograms by the square of your height in meters (kg/m²). This calculator handles both metric and imperial units automatically.
According to the WHO standard, a healthy BMI range is 18.5 to 24.9. Below 18.5 is underweight, 25 to 29.9 is overweight, and 30 or above is obese. Asian and China standards use slightly lower thresholds because research shows health risks begin at lower BMI values for these populations.
Different populations have different body compositions and health risk profiles. The WHO standard is designed for Western populations, while Asian and China standards account for the fact that people of Asian descent often experience obesity-related health risks at lower BMI values. This calculator lets you compare all three standards.
BMI is a useful screening tool but has limitations. It does not account for muscle mass, bone density, age, sex, or fat distribution. Athletes with high muscle mass may have a higher BMI despite low body fat. For a complete health assessment, consult a healthcare provider.
BMI is a weight-to-height ratio that estimates body fat. Body fat percentage is the actual proportion of fat in your body. BMI is easier to calculate and widely used, but body fat percentage provides a more accurate picture of body composition. Tools like body fat calipers or DEXA scans measure body fat percentage directly.
This calculator is designed for adults (18+). For children and teens, BMI is interpreted differently based on age and sex using percentile charts. Consult a pediatrician for accurate BMI assessment in children.
For general health monitoring, checking your BMI once every 3 to 6 months is sufficient. If you are actively working on weight management or fitness goals, you may check monthly. Daily changes are not meaningful — focus on long-term trends.
Consult a healthcare provider for personalized advice. General recommendations include adopting a balanced diet rich in vegetables and lean proteins, increasing physical activity (at least 150 minutes of moderate exercise per week), getting adequate sleep, and managing stress. Small, sustainable changes are more effective than extreme diets.