How to use the TDEE Calculator
Estimate total daily energy expenditure from resting energy and the selected activity factor. It includes Maintain, Gradual loss, Gradual gain workflows, so choose the one that matches the values you actually know. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision.
Step by step
- For the TDEE example, select Maintain and enter weight, height, age, sex, activity factor. Keep each value in the unit displayed beside its field.
- Review the selected TDEE workflow and inputs, then read daily energy estimate in the result panel.
- Change one TDEE assumption at a time to compare scenarios. Use Reset to restore this tool's worked example values.
How the calculation works
Mifflin–St Jeor BMR times activity, with optional goal adjustments and food-energy conversion.
Worked example
To reproduce the TDEE worked example, reset the calculator. Select the Maintain workflow. Use weight 75 kg; height 175 cm; age 35 years; sex Male; activity factor 1.55. The result is daily energy estimate of 2,594.3125 kcal/day. BMR × activity. Review the displayed units before comparing the result.
Understanding the result
The TDEE reports daily energy estimate. Use it to understand an educational estimate and the inputs behind it, not as a diagnosis or treatment decision. Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional.
How to check the answer
Check the TDEE estimate by confirming the units and supported ranges for weight, height, age. Compare daily energy estimate with another published method or direct measurement when available, and ask a clinician before using it for a health decision.
Common questions
What does the TDEE calculate?
Estimate total daily energy expenditure from resting energy and the selected activity factor.
Which inputs does the TDEE example use?
The worked example uses weight, height, age, sex, activity factor in the Maintain workflow. Other workflows can show different fields. Keep the chosen workflow and units with the result when comparing calculations.
Is the TDEE result exact?
Educational estimate only; it cannot diagnose a condition or replace advice from a qualified health professional. Recheck weight, height, age and use daily energy estimate only for a decision where that level of precision is appropriate.