BMI Calculator
Calculate your Body Mass Index and understand your weight category
📋BMI Categories (WHO)
Underweight Risks
Health concerns when BMI is too low
Overweight Risks
Health concerns when BMI is too high
Important Medical Disclaimer
BMI is a screening tool and not a diagnostic tool. It doesn't measure body fat directly and may not be accurate for athletes, elderly individuals, or people with certain medical conditions. Always consult with a healthcare professional for personalized health advice and before making significant changes to your diet or exercise routine.
❓Frequently Asked Questions
Q1.What is BMI and how is it calculated?
BMI (Body Mass Index) is a measure that uses your height and weight to determine if your weight is healthy. It's calculated by dividing your weight in kilograms by your height in meters squared (BMI = kg/m²).
Q2.Is BMI accurate for everyone?
BMI is a useful screening tool but has limitations. It may not be accurate for athletes with high muscle mass, elderly people with muscle loss, or people with certain body types. It's best used alongside other health assessments.
Q3.What's a healthy BMI range?
For adults 20 and older, a healthy BMI range is typically 18.5-24.9 kg/m². However, optimal ranges may vary slightly based on ethnicity and individual factors.
Q4.How often should I check my BMI?
For most adults, checking BMI every few months or during regular health checkups is sufficient. If you're actively trying to lose or gain weight, monthly monitoring may be helpful.
Q5.What's the difference between BMI and BMI Prime?
BMI Prime is BMI divided by 25 (the upper limit of normal BMI). A BMI Prime of 1.0 or less indicates normal weight, while values above 1.0 indicate overweight or obesity.
Q6.Should children use the same BMI categories?
No, children and teens (ages 2-20) use BMI-for-age percentiles that account for normal growth patterns. The categories are: underweight (<5th percentile), normal (5th-85th percentile), overweight (85th-95th percentile), and obese (≥95th percentile).