Basal Metabolic Rate (BMR) Calculator
A BMR Calculator, or Basal Metabolic Rate Calculator, estimates the number of calories your body needs at rest to maintain essential physiological functions like breathing and circulation.
Our BMR calculation uses age, gender, height, and weight to determine your resting energy expenditure. For example, it uses the Harris-Benedict Formula, a 30-year-old woman weighing 70 kg and 165 cm tall would have a different BMR than a man of the same age and height but weighing 80 kg. Generally, heavier individuals and those with more muscle mass have a higher BMR, while BMR decreases with age.
Understanding your BMR is crucial for tailoring your daily caloric intake and managing your weight, as it helps you balance the calories you consume with those you burn.
Basal Metabolic Rate:
Harris-Benedict Formula
For Men:
BMR = 88.362 + (13.397 x weight in kg) + 4.799 x height in cm) - (5.677 x age in years)
For Women:
BMR = 655 + (9.6 x weight in kg) + (1.8 x height in cm) - (4.7 x age in years)
How to Use the BMR Calculator?
The BMR calculator is very simple to use.
Here's a step-by-step guide on how to use a BMR calculator and an example calculation:
Step 01: Input Gender: Select your gender (male or female).
Step 02: Enter Age: Input your age in years.
Step 03: Enter Weight: Input your weight in kilograms (kg).
Step 04: Enter Height: Input your height in centimeters (cm).
Different formulas are used to calculate BMR based on gender. The most common formulas are:
Our BMR calculator works with the most accurate BMR calculation equation, the Harris-Benedict equation, which is used for both males and females.
Example
Let's suppose a user came to calculate her BMR. She puts the following details:
- Gender: Female
- Age: 30 years
- Weight: 60 kg
- Height: 165 cm
Solution
The calculator implements the equation in this way:
BMR = 655 + (9.6 x weight in kg) + (1.8 x height in cm) - (4.7 x age in years)
Weight Component: 9.6 x 60 = 576
Height Component: 1.8 x 165 = 297
Age Component: 4.7 x 30 = 141
Combining the above:
BMR = 655 + 576 + 297 - 141
BMR = 1387
So, the BMR for a 30-year-old female with a weight of 60 kg and height of 165 cm is 1387 calories per day.
Who Uses a BMR Calculator?
A BMR (Basal Metabolic Rate) calculator estimates the number of calories your body needs at rest to maintain essential physiological functions. Many people can use this calculator such as:
- People who want to lose weight can use BMR calculators to determine their daily caloric needs.
- Those who train in strength or play sports use BMR calculators to tailor their caloric intake to support muscle growth and performance.
- Dietitians and nutritionist professionals use BMR calculators to create personalized meal plans for clients.
- Individuals enrolled in structured weight loss programs use BMR calculators to follow dietary recommendations and track their progress.
- Personal trainers use BMR calculators to help clients set realistic fitness and nutritional goals based on their metabolic needs.
- Those studying metabolic rates and energy expenditure use BMR calculators to collect data and analyze trends in metabolic health.
- Doctors and healthcare providers use BMR calculators to assess patients' energy needs for various medical conditions and recovery plans.
- Women who are pregnant or breastfeeding use BMR calculators to adjust their caloric intake to support both their health and the growth of their baby.
- Individuals recovering from health issues or surgery use BMR calculators to adjust their calorie intake to support healing and maintain energy levels.