When to use this calculator
Estimate maintenance energy in one workflow instead of copying a BMR result into another tool. The Mifflin–St Jeor resting estimate is multiplied by your chosen activity assumption. This is not a meal plan or treatment recommendation.
Explore the adult energy estimates calculators for other questions in this topic. For a related calculation, use the Ovulation Calculator: Estimate an ovulation date and an illustrative fertile window from a regular menstrual cycle.
Check the activity assumption before interpreting the number
The resting estimate comes from height, weight, age and the chosen equation coefficient. Multiplying it by an activity factor introduces another assumption. A small change in that factor can materially change the result. Use the number as a model to discuss with a qualified professional, not a prescribed intake.
PUTTING IT INTO PRACTICE
TDEE: a worked example
The values below are an illustrative example, not a recommendation. Replace them with measurements or assumptions that match your question.
| Input | Example value |
|---|---|
| Weight (kg) | 70 |
| Height (cm) | 175 |
| Age in years (integer) | 30 |
| Equation sex coefficient | 1 |
| Chosen activity multiplier | 1.5 |
| Result | 2,473.125 kcal/day |
- Check the input labels and enter the example values above.
- Apply the relationship: Daily maintenance estimate = (10 × kg + 6.25 × cm − 5 × age + sex coefficient) × activity multiplier; coefficient is +5 for male equation or −161 for female equation..
- The result is 2,473.125 kcal/day, rounded for display.
How to interpret your result
An adult population estimate, not a prescribed calorie intake or a weight-loss target. The multiplier is a user assumption, not a measured activity level. Not intended for pregnancy, breastfeeding, children or clinical nutrition planning. Individual energy needs can differ substantially.
Population equations and MET values are estimates rather than personal measurements. Activity multipliers can introduce substantial uncertainty. Outputs describe expenditure models, not prescribed intake, weight targets or treatment.
Frequently asked questions
Does this calculate a calorie deficit for weight loss?
No. It estimates expenditure under the entered assumptions. It does not prescribe a deficit, assess nutritional adequacy or replace individual advice, including during pregnancy or breastfeeding.
Is a BMR or TDEE estimate a calorie-intake prescription?
No. It is a modelled expenditure value. It does not account for every personal or clinical factor or prescribe what an individual should eat.
When is the tdee calculator useful?
Estimate maintenance energy in one workflow instead of copying a BMR result into another tool. The Mifflin–St Jeor resting estimate is multiplied by your chosen activity assumption. This is not a meal plan or treatment recommendation.
How do I use the tdee calculator?
Enter weight (kg), height (cm), age in years (integer), equation sex coefficient, chosen activity multiplier. The result updates automatically. Use the units shown beside each input; the example values illustrate the method.
Which formula does this calculator use?
Daily maintenance estimate = (10 × kg + 6.25 × cm − 5 × age + sex coefficient) × activity multiplier; coefficient is +5 for male equation or −161 for female equation..
What should I check before using the result?
An adult population estimate, not a prescribed calorie intake or a weight-loss target. The multiplier is a user assumption, not a measured activity level. Not intended for pregnancy, breastfeeding, children or clinical nutrition planning. Individual energy needs can differ substantially.
How are results rounded?
Scalar numbers display up to six decimal places, with scientific notation for very large or small values. Text, fraction, date and schedule outputs use the format described on the tool. Intermediate calculations use JavaScript floating-point arithmetic. Keep sensible precision for your measurements.
Further reading
For background on this topic, see Mifflin et al.: background on resting energy estimation ↗. This is a topic reference, not an external review or endorsement of this tool.
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