BMR Calculator

Use the BMR Calculator to Calculate your Basal Metabolic Rate (BMR) and other useful states like TDEE, BMI and Macros to better understand your body's daily calorie needs to maintain, lose or gain weight.

Your Basal Metabolic Rate is

1,413

Calories / day

This is the number of calories your body needs at rest to maintain basic functions.

Click on "More Stats" button to Calculate your BMI score, tdee, and macronutrients at different activity levels. Also, get your detailed personalized report chart on weight loss & weight gain so you can reach your ideal BMI and weight according to your height and age.

More Stats

Activity Level	Description	calories per day
Sedentary	Little to no exercise	~1,696
Lightly Active	Light exercise/sports 1-3 days a week	~1,943
Moderately Active	Moderate exercise/sports 3-5 days a week	~2,190
Heavy Exercise	Hard exercise/sports 6-7 days a week	~2,437
Athlete	Very hard exercise or a physical job	~2,685

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Basal Metabolic Rate

( About the calculation )

Basal Metabolic Rate (BMR)

Basal Metabolic Rate (BMR) calculates the total amount of energy, measured in calories or kilojoules, that your body requires to perform essential physiological functions at rest for 24 hours a day. These functions include breathing, blood circulation, cell growth, metabolism, and temperature regulation.

Even when you're not moving, your body uses energy to keep you alive. Your BMR is your body's major source of energy expenditure, depending on activity levels, it accounts for 60% to 70% of the total energy your body uses.

How BMR is calculated?

Many equations or formulas are used to calculate the Basal Metabolic Rate (BMR), but three equations are commonly used now because of their accuracy. We are using these equations in our calculator to find your BMR.

1. J. Revised Harris-Benedict Equation (1984): In 1918, J. Arthur Harris and Francis G. Benedict Developed the Harris-Benedict Equation, the first widely used BMR formula. To address inaccuracies, the equation was updated in 1984 using modern data, and it is now called the Revised Harris-Benedict Equation.

Revised BMR = 66.5 + (13.75 * weight in kg) + (5.003 * height in cm) - (6.755 * age in years)

2. Katch-McArdle Formula (1970): Developed in the 1970s by Frank I. Katch and William D. McArdle, the formula became a preferred tool in sports science and fitness due to its adaptability for individuals with varying muscle-to-fat ratios.

BMR = 370 + (21.6 * Lean Body Mass in kg)

3. Mifflin-St Jeor Equation (1990): This formula was developed to be more accurate due to shifts in average body composition and better data availability. We use this equation by default, but you may change it in settings.

Men: BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age in years) + 5

Women: BMR = (10 * weight in kg) + (6.25 * height in cm) - (5 * age in years) - 161

How do we calculate the basal metabolic rate (BMR)?

We calculate BMR using 3 formulas that are mentioned above.

First, we get gender, age, height, and weight. In the advanced setting, you may switch between formulas and result units. After submitting these details, click on "Calculate". Then, we calculate your BMR using your details.

You will find a "More Stats" button when you get your BMR. Click on it to calculate your TDEE and BMI from your BMR.

On the result page, you will find the BMR report, TDEE, the number of macros in the calories you burn daily on different activity levels, and BMI report with your healthy weight range according to your height. If we find your BMI score is low or high from the ideal range, the system will provide you a weight loss or weight gain chart.