Basal Metabolic Rate Calculator
Calculate your basal metabolic rate (BMR). The calories your body burns at rest. With clear explanations, recommendations and comparison values.
Note: These calculations are for informational purposes only and do not replace professional tax or financial advice. All information without guarantee.
FAQ
Frequently Asked Questions
What is basal metabolic rate?
Basal metabolic rate (BMR) is the energy your body needs at rest for basic functions like breathing, circulation, and cell renewal. It accounts for about 60-70% of total daily energy expenditure.
How is basal metabolic rate calculated?
The most common formula is Harris-Benedict or Mifflin-St Jeor, using weight, height, age, and gender. Mifflin-St Jeor is considered more accurate for modern populations.
Does this calculator replace a doctor visit?
No. This calculator provides general orientation only. For medical questions, or before starting a diet, therapy or treatment, always consult a qualified physician or therapist.
Guide
Quick Answer
The basal metabolic rate calculator computes the energy your body uses at complete rest, i.e. the minimum energy for organ functions.
What is the Basal Metabolic Rate Calculator?
The basal metabolic rate calculator computes the energy your body uses at complete rest, i.e. the minimum energy for organ functions.
How does the Basal Metabolic Rate Calculator work?
Enter sex, age, weight and height. The calculator computes the basal rate using the Mifflin-St Jeor or Harris-Benedict formula. The basal rate is the foundation for calculating total energy expenditure.
Key Data and Facts
Basal rate men: approx. 1,500-2,000 kcal/day. Women: approx. 1,200-1,600 kcal/day. The basal rate decreases with age and increases with muscle mass.
Step-by-Step Guide
How to calculate your basal metabolic rate (Grundumsatz) step by step: 1. State your sex: the formulas differ for men and women. 2. Enter your age, weight (kg) and height (cm). 3. Mifflin-St-Jeor formula: men: BMR = 10 x weight + 6.25 x height - 5 x age + 5. Women: BMR = 10 x weight + 6.25 x height - 5 x age - 161. 4. Read off the result: the basal metabolic rate indicates how many calories your body burns at complete rest (organ functions, breathing, body temperature). 5. Calculate total energy requirement: multiply the basal metabolic rate by the PAL factor (Physical Activity Level): sedentary activity PAL 1.2, light activity 1.4, moderate 1.6, active 1.8, competitive sport 2.0+. 6. For weight loss: reduce your calorie intake by 300-500 kcal below the total requirement. You should never go below your basal metabolic rate.
Calculation Example
Woman, 35 years, 65 kg, 168 cm: BMR = 10 x 65 + 6.25 x 168 - 5 x 35 - 161 = 650 + 1,050 - 175 - 161 = 1,364 kcal/day. Total requirement at PAL 1.4: 1,910 kcal.
Sources · E-E-A-T
Official sources
Calculations are based on applicable German laws and official data:
Full methodology at Methodology.
Health
Related Calculators
BMI Calculator
Calculate your Body Mass Index (BMI) and find out if your weight is in the normal range. According to WHO classification.
Calorie Calculator
Calculate your daily calorie needs. Basal metabolic rate and total needs using Harris-Benedict and Mifflin-St Jeor formulas.
Ovulation Calculator
Calculate your fertile days and ovulation. For natural family planning. Scientifically based, free, no registration required.
Due Date Calculator
Calculate the expected due date of your baby using Naegele's rule. With clear explanations, recommendations and comparison values.