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Methodology

How We Calculate Your TDEE

Transparency in our calculations builds trust. Here's exactly how our tdee calculator works.

The Formula

Mifflin-St Jeor

Uses the Mifflin-St Jeor equation, which is considered the most accurate for estimating BMR, then multiplies by an activity factor to get TDEE.

Why We Use This Method

We chose the Mifflin-St Jeor method because it's widely recognized in the scientific community for its accuracy and reliability. Multiple validation studies have confirmed its effectiveness across different populations.

Our implementation follows the exact specifications from peer-reviewed research, ensuring you get results that align with established nutritional science.

Limitations

While this calculator provides a good estimate, individual results may vary based on factors like:

  • Metabolic differences between individuals
  • Body composition (muscle vs fat ratio)
  • Medical conditions that affect metabolism
  • Accuracy of the input measurements

For personalized recommendations, we recommend consulting with a registered dietitian or healthcare provider.

References

  1. Mifflin MD et al. A new predictive equation for resting energy expenditure. Am J Clin Nutr. 1990
  2. Frankenfield D et al. Comparison of predictive equations for resting metabolic rate. J Am Diet Assoc. 2005

Ready to use the calculator?

Now that you understand the methodology, try it out.

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