Body mass index (BMI) is a common tool for deciding whether a person has an appropriate body weight. It measures a person’s weight in relation to their height.
According to the National Institutes of Health (NIH):
• A BMI of less than 18.5 means that a person is underweight.
• A BMI of between 18.5 and 24.9 is ideal.
• A BMI of between 25 and 29.9 is overweight.
• A BMI over 30 indicates obesity.
BMI
You should always speak with your doctor or other qualified healthcare provider before you start or change any weight management or physical activity plan. This tool is intended for informational purposes only and does not provide medical advice and is not a substitute for professional medical advice from a qualified healthcare provider. If you think you may have a medical emergency, call your doctor or 911 immediately.
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