BMI Calculator
Calculate your Body Mass Index and understand what it means for your health.
Calculate Your BMI
Weight Converter
Your Results
Your BMI results will appear here
Health Tips
- Maintain a balanced diet with plenty of fruits and vegetables
- Engage in regular physical activity (at least 150 minutes per week)
- Stay hydrated by drinking plenty of water throughout the day
- Get adequate sleep (7-9 hours per night for adults)
Why Track Your BMI?
Health Assessment
BMI is a simple screening tool that can indicate potential health risks.
Track Progress
Monitor changes in your body composition over time with regular BMI checks.
Goal Setting
Use BMI as a reference point for setting realistic health and fitness goals.
Awareness
Increase your awareness of how weight relates to overall health.
Fitness Planning
Inform your exercise and nutrition plans based on your BMI category.
Prevention
Identify potential weight-related health issues before they become serious.
Understanding BMI
What is BMI?
Body Mass Index (BMI) is a measure of body fat based on your weight in relation to your height. It applies to adult men and women.
Formula: BMI = weight(kg) / height(m)²
BMI Categories
BMI values are grouped into categories that indicate whether a person is underweight, normal weight, overweight, or obese.
Categories: Underweight (<18.5), Normal (18.5-24.9), Overweight (25-29.9), Obese (≥30)
Limitations
BMI doesn't directly measure body fat and doesn't account for muscle mass, bone density, or overall body composition.
Example: Athletes may have a high BMI due to muscle mass rather than fat.
Using Your Results
Your BMI result is a starting point for discussions with healthcare providers about your weight and overall health.
Remember: BMI is just one indicator of health and should be considered alongside other factors.
Frequently Asked Questions
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It may overestimate body fat in athletes and those with a muscular build. It may underestimate body fat in older persons and those who have lost muscle mass.
Should children use the same BMI categories?
No, children and teens need BMI-for-age percentiles that account for their age and sex, as their body composition varies as they grow.
What is a healthy BMI range?
For most adults, a BMI between 18.5 and 24.9 is considered healthy. This range is associated with the lowest risk of health problems.
What's the difference between BMI and body fat percentage?
BMI is a calculation based on height and weight, while body fat percentage measures the actual amount of fat in your body. Body fat percentage provides a more accurate assessment of health risk but requires specialized equipment to measure.
How often should I check my BMI?
For most people, checking BMI every few months is sufficient unless you're actively trying to lose or gain weight. Regular monitoring can help you track progress toward your health goals.