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TDEE Calculator

Estimate daily energy expenditure with metabolic model choice and activity.

Details below
About this tool

TDEE improves when the metabolic base improves too.

TDEE depends on the BMR model you start from and on the activity factor you apply afterward. That is why body-composition-aware models can make the estimate more personalized before you even talk about steps or training.

How to use

Start with basics and refine if you know body composition.

  1. Enter age, height, weight and the sex used by the equation.
  2. Choose the metabolic model and the activity level that best matches your average routine.
  3. If you want more personalization, open advanced options and enter body-fat percentage.
Modeling

TDEE precision starts with the BMR model

Many people try to improve TDEE only by changing the activity multiplier, but the metabolic base matters too. If BMR starts too low or too high, the error gets multiplied across the whole daily estimate.

That is why comparing Mifflin, Katch-McArdle and Cunningham is useful: it shows how different assumptions about metabolically active tissue change the result.

  • No body-composition data: start with Mifflin.
  • Body-fat estimate available: compare lean-mass models.
  • Even advanced models should still be treated as plausible ranges, not absolute truth.
FAQ

FAQ

Not necessarily. It is a maintenance estimate. Goals depend on health, objective, history and professional support.

Health

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