# Calculate Basal Metabolic Rate

## BMR CALCULATOR

 Age in Years - calculate age here YOUR GENDER* Male Female YOUR WEIGHT* kg lbs Your weight
 YOUR HEIGHT* cm feet/inch Your height in cm Your height in inch YOUR BODY FAT LEVEL (OPTIONAL) If you want to calculate on KATCH-McARDLE Equation Method Your Body Fat % Calculate body FAT here

YOUR BMR IS ON VARIOUS METHODS

HARRIS-BENEDICT EQUATION

0 Calories/day

This is most widely used equation to calculate BMR.

'
MIFFLIN - ST. JEOR EQUATION

0 Calories/day

The equation that is recommended to estimate BMR by the US Academy of Nutrition and Dietetics.

SCHOFIELD EQUATION

0 Calories/day

This equation estimating BMR based on body mass and age range. SEE(Standard Error of Estimation), need to adjust upward or downward based on principles- more muscular than usual require more energy than the average, Obese subjects require less, Patients at the young end of the age range require more energy, patients at the high end of the age range require less energy.

### What is BMR?

BMR- Basal Matabolic Rate. To understand BMR we need to understand the TDEE (Total Daily Energy Expendature) of our body. We consume energy for vital function of our body, Physical Activity and thematic effect of food.

Basal Matabolic Rate or Body Metabolic Rate is that how much energy expand to maintain vital function of your body activity like blinking, heart pumpting, blood circulating etc.

That if you rest on bed and do nothing, then the amount of energy need to maintain your body activity is BMR. It also maintain your body weight.

### How to calculate BMR?

To exact calculation of BMR of an individual is not possible. But we can calculate approximate value of it. On that base we can correct our intake and maintain our weight and health. There are various methods to estimate BMR. Some of the well known and used equations as follows:

• HARRIS - BENEDICT EQUATION :This is most widely used equation to calculate BMR published in 1919. The calculation methods for men and women are different, mainly due to difference in body mass or weight. The revised Harris-Benedict equation publised in 1984. In our BMR calculation used revised Harris-Benedict equation.

For Men- BMR = 13.397 X W + 4.799 X H(cm) - 5.677 X A + 88.362 Calories/day

For Women- BMR = 9.247 X W + 3.098 X H(cm) - 4.330 X A + 447.593 Calories/day

*** W = body weight in kg, H = height in cm, A = age in years.

• MIFFLIN - ST. JEOR EQUATION :It is the best prediction equation to estimate BMR. The equation that is recommended to estimate BMR by the US Academy of Nutrition and Dietetics. THis equation considered more acurate then the revised Harris-Benedict equation.

BMR = 10 X W + 6.25 X H(cm) - 5.0 X A + s Calories/day

*** W = body weight in kg, H = height in cm, A = age in years. s = +5 for males and -161 for female

• SCHOFIELD EQUATION :This method of estimating BMR was introduced for adult men and women in 1985. This equation was used by WHO to make technical report. This method use individuals body mass and age range to estimate BMR. There are different chart for men and women.

MEN:

Age Equation- Calories/day SEE
< 3 59.512 X W - 30.4 70
3 - 10 22.706 X W + 504.3 67
10 - 18 17.686 X W + 658.2 105
18 - 30 15.057 X W + 692.2 153
30 - 60 11.472 X W + 873.1 167
> 60 11.711 X W + 587.7 164

WOMEN:

Age Equation- Calories/day SEE
< 3 58.317 X W - 31.1 59
3 - 10 20.315 X W + 485.9 70
10 - 18 13.384 X W + 692.6 111
18 - 30 14.818 X W + 486.6 119
30 - 60 8.126 X W + 845.6 111
> 60 9.082 X W + 658.5 108

*** W = body weight in kg, SEE- Standard Error of Estimation

This equation estimating BMR based on body mass and age range. SEE(Standard Error of Estimation), need to adjust upward or downward based on principles- more muscular than usual require more energy than the average, Obese subjects require less, Patients at the young end of the age range require more energy, patients at the high end of the age range require less energy.

• KATCH - McARDLE EQUATION :This equation is use to predict Resting Daily Energy Expendature(RDEE). This formula use weight and body fat percentage to estimate RDEE , which is identical to BMR.

RDEE = 370 + (21.6 - L) Calories/day

L = W(1 - F/100)

*** W = body weight in kg, L= Lean body Mass in Kg., F = Body fat %