BMI Calculator
Calculate your Body Mass Index (BMI) to assess your body weight relative to your height.
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Your BMI
Please enter your height and weight to calculate your BMI.
Frequently Asked Questions
What is BMI and how is it calculated?
BMI (Body Mass Index) is a measure that uses your height and weight to work out if your weight is healthy. It's calculated by dividing your weight in kilograms by your height in meters squared (kg/m²).
What do the BMI categories mean?
BMI categories are: Underweight (below 18.5), Normal weight (18.5-24.9), Overweight (25-29.9), and Obese (30 and above). These ranges help assess potential health risks associated with body weight.
Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It doesn't distinguish between muscle and fat mass, so athletes or very muscular people may have high BMI despite being healthy. It's also less accurate for elderly people.
Should I be concerned if my BMI is outside the normal range?
BMI is just one indicator of health. If your BMI is outside the normal range, consider consulting with a healthcare professional who can assess your overall health, body composition, and other factors.
Does BMI work the same for men and women?
The BMI calculation and categories are the same for both men and women. However, women typically have more body fat than men at the same BMI, so some health professionals consider gender-specific interpretations.
Can I use BMI for children?
BMI can be used for children over 2 years old, but it's interpreted differently using age and sex-specific percentiles. Children's BMI changes as they grow, so consult pediatric growth charts or a healthcare provider.
How often should I check my BMI?
There's no strict rule, but checking BMI every few months can help track changes in your body weight relative to height. Focus on long-term trends rather than daily fluctuations.
What's the difference between BMI and body fat percentage?
BMI uses only height and weight, while body fat percentage measures the actual proportion of fat in your body. Body fat percentage is more accurate for assessing health risks but requires special equipment to measure.