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Calories & Energy

Calories and energy, explained plainly

TDEE, maintenance calories, watch-based burn estimates, and the calories in versus calories out equation: four numbers people mix up constantly, explained one at a time.

Already logging food in MyFitnessPal? See the MyFitnessPal alternatives comparison before you pick a tracker to build these numbers from.


Explainer

Finding Your TDEE →

What total daily energy expenditure is made of, and why yours keeps moving.

Explainer

Maintenance Calories →

Three ways to estimate the intake that matches what you burn.

Explainer

Calories Burned Accuracy →

What a watch can and cannot tell you about your calorie burn.

Explainer

Calories In, Calories Out →

The energy balance equation, and why the scale ignores it daily.

Let your own data sharpen every estimate.

Connect Apple Health, Fitbit, or Oura and a named nutrition coach turns TDEE and calorie balance into numbers grounded in your history. Free Basic, with Pro at $9.99/month.

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See nutrition tracking →

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Wellness Project

The first AI fitness, nutrition, and longevity app where every metric has a named specialist behind it. Free Basic, with Pro at $9.99/month. Now on iPhone.

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