BMR (Mifflin-St Jeor)

The Mifflin-St Jeor BMR calculator estimates your basal metabolic rate, the minimum calories needed to maintain vital functions at rest. It's considered more accurate than older formulas like Harris-Benedict, especially for individuals with normal or overweight BMIs. The calculation uses weight, height, and age but excludes physical activity, serving as a baseline measurement.

For men: (10 × weight kg) + (6.25 × height cm) − (5 × age) + 5. For women: (10 × weight) + (6.25 × height) − (5 × age) − 161. These equations account for metabolic differences between genders, such as muscle density and fat distribution. Results should be multiplied by activity factors to estimate total daily energy expenditure.

Use this calculator to plan diets, track weight goals, or understand metabolism. It's helpful for dietary reeducation or training contexts. However, it doesn't replace nutritional assessments by professionals, especially in cases of metabolic disorders, pregnancy, or morbid obesity where additional factors affect calculations.

Important considerations: results are estimates. The formula may underestimate needs in people with high muscle mass or overestimate in elderly individuals with lean mass loss. It also doesn't consider hormones, genetics, or medical conditions. For complex cases, consult healthcare professionals for greater accuracy.