Energy Adequacy Calculator

Estimate daily energy and protein targets for older adults, assess malnutrition risk, and get food fortification tips and a suggested meal distribution.

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Your details

Daily energy target
1693
kcal/day
Protein target
82
g/day
Malnutrition risk: Low risk
Suggested meal distribution
Breakfast
423 kcal
Cooked breakfast, porridge, or eggs on toast
Lunch
593 kcal
Main meal with meat/fish/egg, starchy food, and vegetables
Evening meal
508 kcal
Balanced evening meal with protein and carbohydrate
Snacks
169 kcal
Biscuits, fruit, milky drinks, or fortified snacks
Food fortification tips
  • ·Add full-fat milk, cream, or butter to mashed potato, porridge, and soups to boost calories
  • ·Fortify milk: add 4 tablespoons of skimmed milk powder per pint of full-fat milk
  • ·Use full-fat dairy (yoghurt, cream cheese) in preference to low-fat versions
  • ·Add cheese to vegetables, pasta, or scrambled eggs for extra protein and energy
  • ·Nourishing drinks (e.g. Complan, fortified smoothies) can supplement meals when appetite is low

This tool provides educational guidance based on population reference values. It is not a substitute for a registered dietitian assessment. People with medical conditions affecting nutrition should seek professional advice.

Also in Ageing

Health — Ageing

Energy Adequacy Calculator

Malnutrition in older adults is significantly underrecognised, yet has serious consequences including muscle wasting, impaired immunity, delayed wound healing, and increased hospital admission risk. This tool estimates daily energy and protein requirements, flags malnutrition risk based on appetite and weight trend, and provides practical meal distribution and food fortification guidance.

Energy requirements in older adults

Basal metabolic rate declines with age, primarily due to loss of muscle mass. However, disease, infection, pressure sores, and elevated physical demands can substantially increase energy requirements above calculated TDEE. The Mifflin-St Jeor equation used here provides a reasonable estimate for older adults, with stress multipliers applied for pressure sores (×1.15) and acute illness (×1.10).

Protein requirements in older adults are higher than in younger adults due to anabolic resistance — the reduced efficiency of muscle protein synthesis. ESPEN guidelines recommend 1.0–1.2 g/kg/day for healthy older adults and 1.2–1.5 g/kg/day in the presence of illness, injury, or pressure sores. Meeting protein targets requires intentional dietary planning, especially when appetite is poor.

Frequently asked questions

What is the MUST screening tool?

MUST (Malnutrition Universal Screening Tool) is a five-step validated screening tool used by healthcare professionals to assess malnutrition risk in adults. It incorporates BMI, unintentional weight loss, and acute disease effect. It is the most widely used screening tool in UK healthcare settings.

What are oral nutritional supplements (ONS)?

ONS are commercially prepared, nutrient-dense liquid or semi-solid products prescribed for people at risk of malnutrition. In the UK, they can be prescribed by a GP or dietitian on the NHS when standard dietary advice and food fortification have been insufficient.

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