Published on August 08, 2026 • Last updated August 08, 2026
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Total Daily Energy Expenditure (TDEE) is the total number of calories your body burns in a full day, combining your resting metabolism with the energy used for daily activity, exercise, and digestion.
While Basal Metabolic Rate (BMR) tells you how many calories your body burns at complete rest, very few people spend their entire day resting. Total Daily Energy Expenditure (TDEE) builds on BMR by adding in everything else that burns energy: walking, working, exercising, fidgeting, and even digesting food. TDEE is calculated by taking your BMR and multiplying it by an "activity multiplier" that reflects how active your lifestyle is — ranging from sedentary to extra active.
The more active you are, the larger the gap between your BMR and your TDEE. TDEE matters because it's the number that actually determines whether you gain, lose, or maintain weight — not BMR alone. Eating roughly the same as your TDEE keeps your weight stable; eating consistently below it creates the deficit needed for weight loss; eating above it supports weight gain or muscle building.
This is why TDEE is the backbone of most diet and fitness planning: it turns an abstract idea like "eat less to lose weight" into a concrete daily calorie target you can plan meals around. Like BMR, TDEE is an estimate rather than an exact figure — actual burn varies day to day with stress, sleep, and activity tracking accuracy — so it's best used as a reference point you adjust based on how your real-world weight changes over a few weeks.
Learn how TDEE is calculated
Plain-language explainers that sit next to this tool.
The answer to "how many calories per day" is not the same for everyone. Your TDEE — Total Daily Energy Expenditure — depends on your weight, height, age, sex, and activity level. Here is the exact formula and tables by goal.
TDEE is the total number of calories your body burns in a day — at rest and through activity. It is the master number behind every effective diet and fitness plan. This guide explains how TDEE is calculated and why it matters more than BMR alone.
Most people confuse BMR and TDEE — and eating at your BMR instead of your TDEE is the #1 calorie calculation mistake. This guide explains the difference and tells you exactly which number to use for your goal.
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