Activity energy estimate
Estimate activity energy using a MET value matched to the activity source. MET describes an activity's metabolic intensity, not its speed.
Understand the numbers · Make life easier
Adult resting energy estimate
Estimate resting energy expenditure using the Mifflin-St Jeor equation. Select the coefficient group used by the original research rather than interpreting it as a health judgement.
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Estimated resting energy expenditure
1,320.25kcal/day
Estimates energy used at rest. It is not directly your daily food allowance or a weight-loss prescription.
REE in kcal/day = 10 × kg + 6.25 × cm − 5 × age + sex coefficient. The original study covered 498 healthy adults aged 19–78. Resting expenditure is not total daily energy need and should not directly become a weight-loss calorie target or diet prescription. Children, pregnancy, breastfeeding, major illness, unusual body composition and medication need professional assessment.
Method and scope
REE in kcal per day equals 10 times kilograms plus 6.25 times centimetres minus five times years, plus the selected coefficient. The coefficients are -161 for the female research group and +5 for the male group.
Daily activity adds energy needs beyond resting expenditure. The result should not automatically become a calorie target or weight-loss prescription.
The original study involved 498 healthy adults aged 19-78. Children, pregnancy or breastfeeding, major illness, unusual body composition and medication-related situations require professional assessment.
References:Mifflin et al.: original study (1990)
What this helps you do
Estimate resting energy expenditure using the Mifflin-St Jeor equation. Select the coefficient group used by the original research rather than interpreting it as a health judgement.
What to enter
Start with research coefficient group, then fill the other relevant fields in the units shown. The field hints explain the required format and examples.
How the calculation works
REE in kcal per day equals 10 times kilograms plus 6.25 times centimetres minus five times years, plus the selected coefficient. The coefficients are -161 for the female research group and +5 for the male group.
Worked example
For 60 kg, 165 cm and age 30 using the -161 coefficient, REE is 1,320.25 kcal per day. This is energy at rest, not total daily expenditure.
Understanding the answer
Daily activity adds energy needs beyond resting expenditure. The result should not automatically become a calorie target or weight-loss prescription.
Scope and limitations
The original study involved 498 healthy adults aged 19-78. Children, pregnancy or breastfeeding, major illness, unusual body composition and medication-related situations require professional assessment.