Health tool

BMI, BMR and calorie calculator

Calculate your body mass index, basal metabolic rate and an indicative daily energy expenditure based on your age, height, weight and physical activity level.

For adults

Calculate the values

Your details

Enter your sex, age, height, weight and physical activity level. This calculator is intended for people aged 18 and over.

Sex
Enter your age in completed years.
For example: 175 cm.
For example: 78.5 kg.
Physical activity level

Little or no regular physical activity.

Light exercise approximately 1–3 days per week.

Exercise approximately 3–5 days per week.

Intense physical activity approximately 6–7 days per week.

Very intense training or physically demanding work.

Good to know

How to read the results

01

What is BMI?

Body mass index (BMI) is an indicative measure that relates weight to height. It is calculated by dividing weight in kilograms by height in metres squared.

BMI = weight [kg] / (height [m] × height [m])
02

What is BMR?

Basal metabolic rate (BMR) is the approximate energy expenditure of the body at complete rest – the energy needed to maintain breathing, circulation, body temperature and other basic functions.

03

How is daily energy expenditure calculated?

The indicative daily energy expenditure is obtained by multiplying the basal metabolic rate by a factor based on the approximate level of physical activity.

04

How accurate is the calculator?

The formulas provide an indicative estimate. Actual energy expenditure can differ with very high muscle mass, pregnancy, certain conditions and specific physiological states.

05

When can an endocrinologist consultation help?

An endocrinologist consultation can be helpful, for example with:

  • unexplained weight change;
  • significantly overweight or underweight;
  • difficulty controlling weight;
  • suspected metabolic or hormonal disorder;
  • abnormalities in blood sugar, insulin or thyroid function.

These signs do not necessarily indicate an endocrine condition. Assessment is individual.

Important

The results are indicative and do not constitute a medical diagnosis or an individual nutritional plan.

BMI and energy expenditure formulas have limitations and can be inaccurate for some people, including those with very high muscle mass, pregnancy, certain conditions and specific physiological states.

Next step

Do you have questions about weight, metabolism or nutrition?

A consultation with an endocrinologist can help with an individual assessment of your condition.

If you wish to change your body weight, the appropriate energy intake depends on many individual factors and is best discussed with a doctor or a qualified nutrition specialist.

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