Calculator
TDEE calculator
Estimate total daily energy expenditure from BMR and activity. Data is processed only in your browser, and the page explains the formula and limitations of the result.
Reviewed: 3 August 2026Processed locally
Calculator
Enter data
Equation sex, weight, height, age and activity level. Fields marked with an asterisk are required.
How to use the calculator
- Enter the required data: equation sex, weight, height, age and activity level.
- Check the values and select “Calculate”.
- Review the primary result and the detailed calculation components.
Calculation details
Formula and calculation method
Mifflin–St Jeor BMR is multiplied by a selected indicative activity factor from 1.2 to 1.9.
Worked example
If BMR is 1,500 kcal and the activity factor is 1.55, indicative TDEE is 2,325 kcal per day.
Limitations
- Activity multipliers are simplified, while actual expenditure depends on body composition, health and measured activity.
Sources
Engine version: 1.0 · Last reviewed: 3 August 2026
Frequently asked questions
Is the entered data sent to a server?
No. The calculation runs locally in your browser and the values are not saved by default.
Is the result definitive?
Not always. Activity multipliers are simplified, while actual expenditure depends on body composition, health and measured activity.