# How to Calculate BMR (Basal Metabolic Rate) – BMR Formula and Online TDEE BMR Calculator

Basal Metabolic Rate or BMR refers to the amount of energy or calories needed for vital bodily functions over a 24 hours period in a state of rest. An indirect rough estimation of ones BMR is calculated using the Mifflin St Jeor Equation.

# The Formula

P – Total heat production.
m – Mass or weight in KG.
h – Height in CM.
s – Sex or gender: +5 for men and −161 for women.

###### Or Simplified:

BMR for men = 10 x weight (kg) + 6.25 x height (cm) – 5 x age (years) + 5
BMR for women = 10 x weight (kg) + 6.25 x height (cm) – 5 x age (years) – 161

Basal Metabolic Rate accounts for 70% of the TDEE – Total Daily Energy Expenditure. The remaining 30% expenditure comes from physical activity (roughly 20%) and thermogenesis or digestion of food (about 10%).

CM

KG

ft. in.

lbs.

# Related Subjects:

BMI Calculator.
Online Grams to Calories Converter.

# How to Convert Grams of Fat, Protein, and Carbohydrates to Calories – Online Grams to Calories Converter

Fats, proteins and carbohydrates are macronutrients and thus provide energy. Energy is measured in calories. The amount of energy in 1 gram differs between macronutrients:

• Fat has 9 calories per gram.
• Protein has 4 calories per gram.
• Carbohydrates have 4 calories per gram.
Carbohydrates may partially consist of Dietary Fiber. Dietary fiber can not be digested and thus should be subtracted from the total Carbohydrates.

# The formula:

(Fat x 9) + (Protein x 4) + ( (CarbohydratesDietary Fiber) * 4) = Total Calories

###### Example:

(1 x 9) + (1 x 4) + ( (354) * 4) = 137

gram
gram
gram
gram

# BMR

To find out how many calories you require a day with different levels of activity, please refer to the BMR (Basal Metabolic Rate) Calculator.

# How to calculate BMI – BMI Formula and Online BMI Calculator

Despite it’s name – Body Mass Index, BMI does not measure body fat directly. However, research has shown that BMI is moderately correlated with direct measures of body fat, and more importantly BMI appears to be as strongly correlated with various metabolic and disease outcome as the direct measures of body fat.
If you are interested in direct measurements you might be interested in the instruments below, otherwise continue reading.

# How is BMI calculated?

###### Step 1 – height

Multiply your height by itself.

###### Step 2 – weight

Divide your weight in kilograms by the value calculated in step 1. For US unit multiply your height by 703 and then divide by the value calculated in step 1.

# BMI calculator

``` ```

``` Units MetricUS Gender MaleFemale Age Height CM Weight KG Height ft. in. Weight lbs. Result 0.0 Underweight < 0 Healthy weight 0 - 0 Overweight 0 - 0 Obese 0 - 0 Morbidly obese > 0 Ideal weight 0 - 0 ```
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# BMR

If your BMI is above or below healthy weight, please refer to the BMR Calculator to find out how many calories you should be taking in daily.

# Macronutrients

If you would like to calculate how many of your calories come from fat, protein, and carbohydrates, please refer to the Online Grams to Calories Converter.