BMR Calorie Definition Use our free online BMR Calorie Calculator to determine your daily caloric intake. Whether you are trying to lose body fat, develop lean muscle mass or simply maintain your current body weight, using this calculator will give you a precise idea of how many calories you should be consuming on a daily basis.

What is BMR BMR stands for “Basal Metabolic Rate”. This is simply defined as the amount of energy expended daily by the body. Your basal metabolic rate is necessary for the maintenance of your organs and their various functions, i.e. heart, lungs, digestive system, brain, skin, liver and kidneys.

Various Factors Affecting Calorie Calculations Your basal metabolic rate generally decreases with age and lean body mass, therefore it is important to understand the variety of factors that affect one’s overall total daily caloric expenditure. This online calculator takes into consideration the following factors to give you the most precise calculation:

Height

Weight

Age

Activity Level

Gender

Activity Level is very important in relationship to determine one calorie calculation known as the Harris-Benedict Equation. This online calculator defines activity level as:

Moderately Active – Workout/Exercise 2-3 times a week

Very Active – Workout/Exercise 4-5 times a week

Extra Active – Workout/Exercise 5-7 times a week (also for individuals who engage in physical activity for labor purposes)

Knowing your activity level can highly inflate your caloric intake. Choose wisely in order to get the most accurate calculation.

Macronutrient Intake Also, this online calculator gives you the option to calculate your daily calorie intake based on your macronutrient ratios such as protein, carbohydrate and fat intake. You are given the option to determine protein intake based on body weight or lean body mass. You will need to know your body fat percentage to determine this particular calculation. Once you input in your various measurements, i.e. height, weight, gender, etc. – this BMR calculator will give you four calculations:

Mifflin-St Jeor Formula

Katch-McCardle Formula (Requires Body Fat Percentage)

Harris-Benedict Formula (Based on Activity Level)

Average BMR

Total Daily Energy Expenditure

Using this BMR calculator will give you a very good idea of how many calories you should be consuming on a daily basis in order to maintain your current body weight. Many individuals find themselves consuming far too many, and in some instances, not enough calories in order to maintain a healthy body and metabolism. This is a great tool to map out your overall nutritional requirements.

How to Calculate BMR Calorie Let's be honest - sometimes the best bmr calorie calculator is the one that is easy to use and doesn't require us to even know what the bmr calorie formula is in the first place! But if you want to know the exact formula for calculating bmr calorie then please check out the "Formula" box above.