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Fat Loss Worked Examples

TDEE Examples

TDEE is the total number of calories your body burns in a 24-hour period, encompassing your Basal Metabolic Rate (BMR), the thermic effect of food (TEF), and energy expended through physical activity (NEAT and EAT). Calculating your TDEE is a critical first step in tailoring a nutrition plan for effective fat loss, allowing you to establish a precise caloric deficit without guesswork.

By Orbyd Editorial · AI Fit Hub Team
Best Next MoveNutrition

TDEE Calculator

Estimate your daily energy expenditure with Mifflin-St Jeor + activity factors.

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Worked Examples

See the inputs and outcome together

Each scenario keeps the starting point, the outcome, and the actual lesson in one place so the page reads like a decision notebook, not a data dump.

  1. 1

    Baseline case

    Run the default sample case before changing anything else.

    The calculator lands with bmr at 1,767.5 and tdee at 2,739.63.

    Gender

    Male

    Age

    30

    Weight Kg

    80

    Height Cm

    178

    Age is worth watching because it moves bmr fastest in this scenario.

  2. 2

    Higher Age

    Increase age while keeping the rest of the case steady.

    The calculator lands with bmr at 1,742.5 and tdee at 2,700.88.

    Gender

    Male

    Age

    35

    Weight Kg

    80

    Height Cm

    178

    Age is worth watching because it moves bmr fastest in this scenario.

  3. 3

    Lower Weight Kg

    Reduce weight kg while keeping the rest of the case steady.

    The calculator lands with bmr at 1,647.5 and tdee at 2,553.63.

    Gender

    Male

    Age

    30

    Weight Kg

    68

    Height Cm

    178

    Weight Kg is worth watching because it moves bmr fastest in this scenario.

  4. 4

    Higher Height Cm

    Increase height cm while keeping the rest of the case steady.

    The calculator lands with bmr at 2,155 and tdee at 3,340.25.

    Gender

    Male

    Age

    30

    Weight Kg

    80

    Height Cm

    240

    Height Cm is worth watching because it moves bmr fastest in this scenario.

Patterns

TDEE multipliers are estimates; real-world NEAT (Non-Exercise Activity Thermogenesis) can significantly shift your actual energy expenditure beyond initial assumptions, especially for sedentary roles.
Factors like sleep quality, chronic stress, and hormonal fluctuations can impact metabolic efficiency and fat loss, even when TDEE calculations suggest a sufficient caloric deficit.
For individuals with highly physical occupations, their daily work alone often contributes the most to their TDEE, potentially making additional strenuous exercise redundant or counterproductive for fat loss if not managed carefully.
Accurately assessing your activity level is paramount. Underestimating your TDEE can lead to slow fat loss, while overestimating can result in frustration and a lack of progress.

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General fitness estimates — not medical advice. Consult a healthcare professional for medical decisions.