Estimated total daily energy expenditure (TDEE)
Mifflin–St Jeor estimates resting expenditure. TDEE = that estimate × selected activity factor. −20% and +15% are author-defined deficit and surplus scenarios.
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Calculation
Result
- Basal metabolic rate (BMR)
- 1699 kcal/day
- Total daily energy expenditure (TDEE)
- 2633 kcal/day
- Weight loss
- 2106 kcal/day
- Weight maintenance
- 2633 kcal/day
- Weight gain
- 3028 kcal/day
Energy at rest: breathing, circulation and organ function
BMR × activity factor 1.550
A 20% deficit from TDEE
Intake equals expenditure
A 15% surplus over TDEE
For adults. Activity factors are approximations, not measured PAL. The equation does not determine individual needs or a safe deficit; prediction error does not prove a metabolic disorder.
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How it is calculated
Mifflin–St Jeor estimates resting expenditure. TDEE = that estimate × selected activity factor. −20% and +15% are author-defined deficit and surplus scenarios.
Formula
BMR (men) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age + 5; BMR (women) = 10 × weight(kg) + 6.25 × height(cm) − 5 × age − 161; TDEE = BMR × activity factor
Limits of the method
For adults. Activity factors are approximations, not measured PAL. The equation does not determine individual needs or a safe deficit; prediction error does not prove a metabolic disorder.
Sources of the method
This calculation is for reference only and is not medical advice, a diagnosis or a prescription. If you have a medical condition, are pregnant, take medication or have any doubts, discuss the result with a physician or a qualified nutrition professional.
How to use the calculation
Enter the starting values
Mifflin–St Jeor estimates resting expenditure. TDEE = that estimate × selected activity factor. −20% and +15% are author-defined deficit and surplus scenarios.
Adjust the parameters
Mifflin–St Jeor estimates resting expenditure. TDEE = that estimate × selected activity factor. −20% and +15% are author-defined deficit and surplus scenarios.
Read the result
For adults. Activity factors are approximations, not measured PAL. The equation does not determine individual needs or a safe deficit; prediction error does not prove a metabolic disorder.
Frequently asked questions
What does the calculation show?
Mifflin–St Jeor estimates resting expenditure. TDEE = that estimate × selected activity factor. −20% and +15% are author-defined deficit and surplus scenarios.
What limitations apply?
For adults. Activity factors are approximations, not measured PAL. The equation does not determine individual needs or a safe deficit; prediction error does not prove a metabolic disorder.
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What next
Formula breakdowns, biomarker reference ranges and nutrition articles with cited sources are in the NutriFit knowledge base.
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