This guide explains tdee calculator using widely referenced CDC and WHO standards. It is written as plain-language education to help you interpret your own measurements — not as a substitute for personalized medical advice.
From BMR to TDEE
TDEE multiplies BMR by an activity factor to estimate a full day of energy use:
- Sedentary (little or no exercise): BMR × 1.2
- Lightly active (1–3 days/week): BMR × 1.375
- Moderately active (3–5 days/week): BMR × 1.55
- Very active (6–7 days/week): BMR × 1.725
- Extra active (physical job + training): BMR × 1.9
Using TDEE for goals
A moderate calorie deficit (roughly 10–20% below TDEE) is a common, sustainable approach for fat loss; a modest surplus supports muscle gain. TDEE is an estimate — adjust based on real-world results over weeks, not days.
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