Anorexic BMI Calculator
Calculate clinical Underweight & Anorexia Nervosa BMI severity according to DSM-5 criteria, target recovery weights, and nutritional benchmarks.
yrs
cm
kg
Calculated Body Mass Index
16.16
Moderate Underweight
<15 Extreme
15.0 Severe
16.0 Moderate
17.0 Mild
18.5 Normal
25+ Above
Min Healthy Weight (BMI 18.5)
50.4 kg
Gain +6.4 kg needed
Optimal Recovery Target (BMI 20.0)
54.5 kg
Gain +10.5 kg for resilience
% Ideal Body Weight (%IBW)
73.5%
Ref: Standard BMI 22.0
Est. Basal Metabolic Rate
1,180 kcal
Maint: ~1,620 kcal/day
| DSM-5 Severity Category | BMI Range | Clinical Implications |
|---|---|---|
| Extreme Severity | < 15.0 kg/m² | Critical medical risk. Immediate clinical evaluation & inpatient support strongly recommended. |
| Severe Severity | 15.0 – 15.99 kg/m² | Marked physical compromise, high risk of refeeding & metabolic disturbances. |
| Moderate Severity | 16.0 – 16.99 kg/m² | Clinically significant underweight requiring structured medical and nutritional care. |
| Mild Severity | 17.0 – 18.49 kg/m² | Sub-clinical to mild underweight; monitoring and supportive re-nourishment indicated. |
| Normal Healthy Range | 18.5 – 24.99 kg/m² | Healthy weight standard according to World Health Organization (WHO). |
Compassionate Support & Eating Disorder Helplines
If you or someone you care about is struggling with body image, restrictive eating, or anorexia, you don't have to navigate it alone. Confidential, free support is readily available:
🇺🇸 USA (NEDA / 988): Call or Text 988
🇬🇧 UK (Beat): 0808 801 0677
🇨🇦 Canada (NEDIC): 1-866-633-4220
🇦🇺 Australia (Butterfly): 1800 33 4673
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