Fitness & Health

Estimated Energy Requirement (EER) Calculator

Estimates your daily calorie needs using the Institute of Medicine 2005 Dietary Reference Intake equations. It picks the right formula for adults, teens, children, pregnancy, or lactation.

How to use
  1. Select your life stage and sex.
  2. Enter age, height, weight, and activity level.
  3. Use the pregnancy or lactation option if it applies.
Try a profile
Estimated energy requirement
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Energy to maintain current weight at your activity level.

PA coefficient
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Cut · 0.5 kg/wk loss
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Bulk · 0.25 kg/wk gain
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Estimates for general wellness, not medical advice. Check with a doctor or dietitian before acting on health figures.
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Common questions

How is EER different from TDEE?

EER uses the IOM Dietary Reference Intake equations rather than the more common Mifflin-St Jeor approach. Both estimate maintenance calories, just with different formulas.

Why does pregnancy use a separate formula?

Energy needs rise during pregnancy and lactation, so the DRIs add stage-specific amounts on top of the base requirement.

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