About the TDEE Calculator
The TDEE Calculator is designed to give you a quick, practical estimate using the information you enter. Estimate Total Daily Energy Expenditure from BMR and an activity factor. The tool supports the unit choices shown in the calculator and presents the result in a format that is easy to compare with related weight-management measures.
Use the calculator by entering the requested values and selecting Calculate. The result card explains the main estimate and, where useful, shows supporting values that help you understand how the answer was derived. Select Reset to clear the form and start again.
This calculator is intended for general educational and planning purposes. It uses published equations or standard mathematical relationships, but individual needs and outcomes can vary. Treat the result as an estimate rather than a diagnosis, prescription, or guarantee.
Estimate Total Daily Energy Expenditure from BMR and an activity factor.
What Is Total Daily Energy Expenditure?
Total Daily Energy Expenditure (TDEE) is an estimate of how much energy you use across a typical day, combining resting needs with activity.
It is often used as a starting estimate for maintenance calories and weight-management planning.
Formula / Method Used
TDEE = estimated BMR × selected activity factor.
How to Use the TDEE Calculator
- Choose the unit system or options requested by the tool.
- Enter the required measurements or planning values.
- Select Calculate to view your result and supporting details.
- Review the explanation and limitations before using the estimate for planning.
Example Calculation
If BMR is 1,680 kcal/day and the activity factor is 1.55, estimated TDEE is about 2,604 kcal/day.
Limitations
Activity multipliers are broad approximations and can over- or underestimate real-world energy expenditure.
Frequently Asked Questions
Is this calculator exact?
No. It provides an estimate based on the inputs and method shown on the page.
Can I use the result as medical advice?
No. The result is for general informational and educational use and does not replace individualized advice from a qualified healthcare professional.
Can I switch between Metric and US units?
Where measurements are required, the calculator supports the unit systems displayed in the form.
Methodology & References
Multiplies estimated BMR by a selected activity factor.