Mifflin-St Jeor Equation Calculator
Clinical calculator using the Mifflin-St Jeor equation to predict resting energy expenditure and daily caloric needs in healthy adult populations.
The Mifflin-St Jeor equation is a widely used tool to determine the resting metabolic rate [RMR], which is defined as the number of calories burned while the body is in complete rest. RMR is also known as resting energy expenditure [REE]. The equation was developed by MD Mifflin and ST St Jeor and first introduced in a paper published in 1990.
There are several equations for measuring RMR, including the most popular Harris-Benedict equation which was developed in 1919 and revised for accuracy in 1984. A comparative study of four predictive equations found that the Mifflin-St Jeor equation is more likely than the other equations to predict RMR to within 10% of that measured.
Formula
Females: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) – 161
Males: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) + 5
Multiply by scale factor for activity level:
Sedentary *1.2
Lightly active *1.375
Moderately active *1.55
Active *1.725
Very active *1.9
- [1]Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO.: A new predictive equation for resting energy expenditure in healthy individuals.Am J Clin Nutr. 1990;51(2):241-7. doi: 10.1093/ajcn/51.2.241.
- [2]Frankenfield D, Roth-Yousey L, Compher C.: Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults: a systematic review.J Am Diet Assoc. 2005;105(5):775-89. doi: 10.1016/j.jada.2005.02.005.
Results
Real-time automated computation
The Mifflin-St Jeor equation is a widely used tool to determine the resting metabolic rate [RMR], which is defined as the number of calories burned while the body is in complete rest. RMR is also known as resting energy expenditure [REE]. The equation was developed by MD Mifflin and ST St Jeor and first introduced in a paper published in 1990.
There are several equations for measuring RMR, including the most popular Harris-Benedict equation which was developed in 1919 and revised for accuracy in 1984. A comparative study of four predictive equations found that the Mifflin-St Jeor equation is more likely than the other equations to predict RMR to within 10% of that measured.
Formula
Females: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) – 161
Males: (10*weight [kg]) + (6.25*height [cm]) – (5*age [years]) + 5
Multiply by scale factor for activity level:
Sedentary *1.2
Lightly active *1.375
Moderately active *1.55
Active *1.725
Very active *1.9
- [1]Mifflin MD, St Jeor ST, Hill LA, Scott BJ, Daugherty SA, Koh YO.: A new predictive equation for resting energy expenditure in healthy individuals.Am J Clin Nutr. 1990;51(2):241-7. doi: 10.1093/ajcn/51.2.241.
- [2]Frankenfield D, Roth-Yousey L, Compher C.: Comparison of predictive equations for resting metabolic rate in healthy nonobese and obese adults: a systematic review.J Am Diet Assoc. 2005;105(5):775-89. doi: 10.1016/j.jada.2005.02.005.