The TDEE Calculator helps you Estimate total daily energy expenditure. Enter your own values to get an instant result, then use the graph and table to understand how the inputs affect the answer. Calculations run in your browser and are not sent to CalcifyNow.
How the calculation works
Enter BMR (kcal/day), Activity factor. The calculator validates the inputs and updates the answer, chart and breakdown without sending your values to the server.
Formula and method
TDEE = BMR × activity factor. Choose a factor that reflects typical activity.
The result is recalculated whenever you change an input. Use consistent units throughout and keep the displayed rounding in mind when comparing with another source.
Worked example
Use the calculator's pre-filled values as a worked example:
BMR (kcal/day): 1650
Activity factor: 1.55
Change one value at a time to see how it affects the result, graph and table.
How to interpret the result
Read the main result together with the supporting values. The graph shows the relationship visually, while the table makes each step easier to inspect.
Common uses
Understand a personal measurement or target.
Compare different inputs without saving personal data.
Use the estimate to prepare better questions for a qualified professional.
Limitations and common mistakes
This calculator cannot account for medical history, diagnosis, medication or every individual factor. It is informational and is not medical advice.
COMMON QUESTIONS
Frequently asked questions
What does the TDEE Calculator calculate?+
Estimate total daily energy expenditure.
What information do I need for the TDEE Calculator?+
Have these values ready: BMR (kcal/day), Activity factor. Labels beside each field explain the expected unit or format.
How accurate is the TDEE Calculator?+
It applies the formula shown on this page. Its accuracy depends on the accuracy of your inputs and the assumptions described below the calculator.
How should I interpret the TDEE result?+
Treat the result as an informational estimate, not a diagnosis. Individual history and circumstances may change how a health measurement should be interpreted.
Can I use the TDEE Calculator for an important decision?+
Use it as an informed estimate, then confirm important decisions with current official information or a qualified professional.
Are my calculation inputs saved or shared?+
No. The calculation runs locally in your browser. CalcifyNow does not submit your input values to its database.
Sources and review
Written byCalcifyNow Editorial Team
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