justyourcalculatorAnorexic BMI Calculator
BMI with the DSM-5 underweight severity levels, and where to find help.
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Anorexic BMI Calculator
BMI with the DSM-5 underweight severity levels
Your BMI
18.3
In the DSM-5 "mild" severity range
- DSM-5 severity band
- Mild (17 - 18.49)
- Healthy weight range
- 111.2 lb - 150.2 lb
- Weight to reach BMI 18.5
- gain 1.2 lb
Not medical advice or a diagnosis. Anorexia is diagnosed by a clinician from eating behavior and health, not BMI alone, and it can be serious at any weight. If you're worried about yourself or someone else, please talk to a doctor. In the US, the ANAD helpline is 1-888-375-7767; in a crisis call or text 988.
| Level | BMI | Weight at your height |
|---|---|---|
| Mild | 17 - 18.49 | 102 lb - 111 lb |
| Moderate | 16 - 16.99 | 96 lb - 102 lb |
| Severe | 15 - 15.99 | 90 lb - 96 lb |
| Extreme | below 15 | under 90 lb |
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How the anorexic bmi calculator works
The DSM-5 grades the severity of anorexia nervosa in adults by BMI: mild 17 or more, moderate 16 to 16.99, severe 15 to 15.99 and extreme below 15. These bands only describe severity once a clinician has made a diagnosis.
A low BMI on its own isn't a diagnosis; some people are naturally slim. Equally, eating disorders can be serious at any weight, so behavior and wellbeing matter more than the number. For under 18s, BMI-for-age percentiles are used instead.
Using and checking your result
Published by JustYourCalculator. Check the units and assumptions above, and compare a known example before relying on the output. Calculations use browser arithmetic and may round displayed values.
This tool provides an estimate, not a diagnosis, treatment plan or individualized medical advice. Population formulas may not fit children, pregnancy, athletes or people with health conditions. Discuss health decisions with a qualified clinician.
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