Health Tools
Calorie Calculator UK
Estimate your daily calorie needs using the Mifflin-St Jeor equation, endorsed by the British Dietetic Association and referenced in NICE obesity guidelines.
Calculate your daily calories
Suggested macro breakdown
Activity Level Guide
| Level | Multiplier | Example |
|---|---|---|
| Sedentary | 1.2 | Desk job, no structured exercise |
| Lightly active | 1.375 | Walking, light gym 1 to 3 days per week |
| Moderately active | 1.55 | Moderate cardio or weights 3 to 5 days per week |
| Very active | 1.725 | Hard training 6 to 7 days per week |
| Extra active | 1.9 | Physical job plus daily training |
Source: Mifflin MD, et al. (1990). A new predictive equation for resting energy expenditure. American Journal of Clinical Nutrition. Endorsed by British Dietetic Association, referenced in NICE NG246.
Clinical disclaimer
This calculator provides an estimate only. It is not suitable for children under 15, pregnant or breastfeeding women, or people with eating disorders. Do not follow a very low calorie diet (below 800 kcal per day) without medical supervision. If you are concerned about disordered eating, contact BEAT on 0808 801 0677.
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