Free MUST score calculator: check malnutrition risk in seconds
Use our free MUST score calculator to quickly identify malnutrition risk in your service. Enter a few details and get an instant result with clear scoring and next steps. Built for care managers and carers who need a simple, reliable way to assess risk and evidence decisions. This tool supports good practice but does not replace professional judgement.
MUST score: commonly asked questions
The MUST (Malnutrition Universal Screening Tool) is a widely used method to identify adults at risk of malnutrition. It uses BMI, weight loss, and acute illness to give a clear, consistent score.
Enter current weight and height to calculate BMI, add previous weight to assess weight loss, and confirm if the client is acutely ill. The calculator does the rest and gives you a total score instantly.
Your total score shows the level of malnutrition risk and what action you should take next.
- 0 = low risk. Continue routine care and repeat screening at appropriate intervals.
- 1 = medium risk. Observe closely, review intake, and repeat screening more frequently.
- 2 or more = high risk. Take action, follow local policy, and consider referral for nutritional support.
Follow the guidance linked to each risk level, record the outcome, and review regularly. Make sure any concerns are acted on in line with your organisation’s policy.
No. This calculator is a guide to support care decisions. It should be used alongside clinical judgement and local policy.
Low risk (score 0)
Routine clinical care
Repeat screening:
- Hospital: weekly
- Care home: monthly
- Community: annually (more often for those over 75)
Medium risk (score 1)
Observe
- Record dietary intake for 3 days
- If intake is adequate, repeat screening:
- Hospital: weekly
- Care home: at least monthly
- Community: every 2 to 3 months
- If intake is inadequate:
- Follow local policy
- Set goals to improve nutritional intake
- Monitor and review care plan regularly
High risk (score 2 or more)
Treat and take action
- Refer to a dietitian or nutritional support team, or follow local policy
- Set goals to improve intake
- Monitor and review care plan:
- Hospital: weekly
- Care home: monthly
- Community: monthly
- Consider whether nutritional support is appropriate in all cases
All risk levels
- Treat any underlying condition
- Provide support with food and drink where needed
- Record malnutrition risk and any dietary requirements
- Follow local policy for care planning and documentation
Obesity
- Record presence of obesity
- Manage underlying conditions first before addressing weight
The ‘Malnutrition Universal Screening Tool’ (‘MUST’) is based on and reproduced with permission from BAPEN (British Association for Parenteral and Enteral Nutrition). More information is available at www.bapen.org.uk
Make MUST scoring part of everyday care
PASS helps you calculate MUST scores in seconds, track changes over time, and keep clear, accurate records in one place. No spreadsheets, no missed reviews. Just simple, consistent assessments your whole team can rely on.
