Calculate your Body Mass Index accurately and get personalized health insights, recommendations, and AI-powered wellness advice.
Body Mass Index Calculator
Enter your measurements to get:
Enter your height and weight to calculate your Body Mass Index
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Your BMI is
Height
170 cm
Weight
70 kg
Body Mass Index
22.5
Reduce 500-1000 calories/day
Balance calories with activity
Add 500 calories/day
Precise BMI calculation using the standard formula with support for both metric and imperial units.
Interactive charts showing your BMI position, ideal weight range, and category distribution.
Personalized health recommendations and insights powered by AI technology.
Comprehensive health information, weight management guidelines, and nutrition tips.
Body Mass Index (BMI) is a simple calculation using a person's height and weight. The formula is BMI = kg/m² where kg is a person's weight in kilograms and m² is their height in meters squared. BMI is a screening tool that can indicate whether a person is underweight, healthy weight, overweight, or obese.
While BMI is a useful screening tool, it doesn't directly measure body fat or account for factors like muscle mass, bone density, overall body composition, and racial and sex differences. Athletes with high muscle mass may have a high BMI but not be overweight. It's best used as one of several indicators of health.
For most adults, a healthy BMI range is 18.5 to 24.9. Below 18.5 is considered underweight, 25 to 29.9 is overweight, and 30 or higher is obese. However, these ranges may vary slightly for different ethnicities and age groups.
Improving your BMI involves adopting healthy lifestyle habits: balanced nutrition with appropriate calorie intake, regular physical activity (at least 150 minutes of moderate exercise per week), adequate sleep, stress management, and staying hydrated. Consult healthcare providers for personalized advice.