MUST Malnutrition Screening Tool Calculator

Calculate MUST (Malnutrition Universal Screening Tool) score from BMI, unintentional weight loss, and acute disease effect. Guides nutrition intervention urgency.

Weight
Height
Clinical Guidance

BMI is a screening measure of body size, not a direct measure of body fat. The standard WHO categories are underweight (<18.5), normal (18.5–24.9), overweight (25–29.9), and obese (≥30).

BMI can overestimate body fat in athletes with high muscle mass and underestimate it in older adults with low muscle mass. Interpret it alongside waist circumference and clinical context rather than as a standalone diagnosis.

⚕ Clinical Disclaimer: These calculators are for educational and reference purposes only. Always verify results with qualified clinical judgment and current clinical guidelines. Do not use as a sole basis for medical decisions.
Advertisement

How It Works

Calculate MUST (Malnutrition Universal Screening Tool) score from BMI, unintentional weight loss, and acute disease effect. Guides nutrition intervention urgency

Each component has a specific meaning:

  • BMI — The bmi recorded for the patient or scenario being assessed.
  • Unintentional weight loss — The unintentional weight loss recorded for the patient or scenario being assessed.
  • Acute disease effect — The acute disease effect recorded for the patient or scenario being assessed.

Note: Interpret the must score result against the clinical thresholds and context described above.

How to Use

Enter the BMI, unintentional weight loss, acute disease effect for the patient or scenario you are assessing. Calculate MUST (Malnutrition Universal Screening Tool) score from BMI, unintentional weight loss, and acute disease effect. Guides nutrition intervention urgency. Use the must score result to inform your clinical assessment.

Related Calculators

Enteral Nutrition

Medical & Healthcare

TPN Calculator

Medical & Healthcare

Frailty Index

Medical & Healthcare

Frequently Asked Questions