Health & Wellbeing

Basal Metabolic Rate (BMR)

Calories your body burns at complete rest.

Education and reference only. Not a substitute for clinical judgement, local policy or product labelling. Always verify before clinical use. Values are calculated in your browser and never stored.

When to use

Use to estimate the energy (calories) your body needs at rest — the baseline before any activity.

Why use

BMR is the starting point for understanding daily calorie needs, using the widely validated Mifflin-St Jeor equation.

Advice

This is the energy used just to keep your body working at rest. Your total daily needs are higher once activity is added — see the Daily Calorie Needs calculator.

References

  1. Mifflin MD, St Jeor ST, et al. A new predictive equation for resting energy expenditure. Am J Clin Nutr. 1990.

Related calculators

Daily Calorie Needs (TDEE)Estimated total daily calories to maintain weight.Body Mass Index (BMI)Weight-for-height screening measure.

Need a calculator we don't have — or a custom tool?

We build evidence-led clinical calculators, dashboards and reference tools for teams.

Request a Custom Tool ☎ +44 7448 439750
☎ Call Get a Proposal