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TDEE Calculator

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Calculate total daily energy expenditure and the calorie targets for cutting, maintaining or bulking.

Inputs

How to use this calculator: TDEE Calculator

Calculate total daily energy expenditure and the calorie targets for cutting, maintaining or bulking. The example below is calculated by this page's real engine from the displayed inputs.

  1. 1Confirm that the TDEE Calculator matches the quantity or design check you need.
  2. 2Enter Age, Weight, and Height using the units printed beside each field.
  3. 3Select the applicable Sex and Activity level options; these choices change the calculation method or factors.
  4. 4Calculate, then follow the substituted equations in the worked example and compare the result with any stated limit.
  5. 5Read the assumptions, warnings and cited references before using the result for a financial, medical or engineering decision.

Input guide and example values

Use values from the same measurement basis and time period. Conditional fields appear only when the related option is selected.

InputExample valueWhy it matters
SexMaleSelect the option that matches the real installation or scenario.
Age30 yearsMeasured or known age used by the calculation engine.
Weight70 kgMeasured or known weight used by the calculation engine.
Height172 cmMeasured or known height used by the calculation engine.
Activity levelModerate — exercise 3–5 days/weekSelect the option that matches the real installation or scenario.

Formula inputs & variables for TDEE Calculator

These are the named quantities used by this calculator. When the source formula does not define a mathematical symbol, OneCalcApp keeps the real input label instead of inventing one.

Variable / inputUnitMeaning in this calculation
Sex—Select the option that matches the real installation or scenario.
AgeyearsMeasured or known age used by the calculation engine.
WeightkgMeasured or known weight used by the calculation engine.
HeightcmMeasured or known height used by the calculation engine.
Activity level—Select the option that matches the real installation or scenario.

How the TDEE Calculator works

The TDEE Calculator uses Sex, Age, Weight, Height, and Activity level to calculate TDEE (maintenance), Mild fat loss (−500), Aggressive cut (−750), Lean bulk (+300), and BMR. Its engine applies TDEE = BMR × activity factor; the worked values below come from that same live calculation rather than a separately typed example.

With Sex Male, Age 30 years, Weight 70 kg, Height 172 cm, and Activity level Moderate — exercise 3–5 days/week, the main worked-example result is TDEE (maintenance) = 2,527 kcal/day.

How each TDEE Calculator input is used

Sex

The TDEE Calculator worked example selects “Male”. Available choices include Male and Female. This selection may change the method or factor used by the engine, so choose the option that matches the real case.

Age

The TDEE Calculator worked example uses Age = 30 years. This value is passed directly into the calculation, with an allowed minimum 5 and maximum 100.

Weight

The TDEE Calculator worked example uses Weight = 70 kg. This value is passed directly into the calculation, with an allowed minimum 0.

Height

The TDEE Calculator worked example uses Height = 172 cm. This value is passed directly into the calculation, with an allowed minimum 0.

Activity level

The TDEE Calculator worked example selects “Moderate — exercise 3–5 days/week”. Available choices include Sedentary — desk job, no exercise, Light — exercise 1–3 days/week, Moderate — exercise 3–5 days/week, Active — hard exercise 6–7 days/week, and Athlete — physical job or twice-daily training. This selection may change the method or factor used by the engine, so choose the option that matches the real case.

TDEE Calculator formulas and result interpretation

Formula 1: relationship used

In the TDEE Calculator, TDEE = BMR × activity factor. The quantities in this relationship come from the named inputs or from an earlier calculation step shown in the worked example.

TDEE (maintenance)

For the displayed TDEE Calculator worked example, TDEE (maintenance) is 2,527 kcal/day. Verify Sex, Age, and Weight and their units before relying on this output.

Mild fat loss (−500)

For the displayed TDEE Calculator worked example, Mild fat loss (−500) is 2,027 kcal/day. Verify Sex, Age, and Weight and their units before relying on this output.

Aggressive cut (−750)

For the displayed TDEE Calculator worked example, Aggressive cut (−750) is 1,777 kcal/day. Verify Sex, Age, and Weight and their units before relying on this output.

Lean bulk (+300)

For the displayed TDEE Calculator worked example, Lean bulk (+300) is 2,827 kcal/day. Verify Sex, Age, and Weight and their units before relying on this output.

BMR

For the displayed TDEE Calculator worked example, BMR is 1,630 kcal/day. Verify Sex, Age, and Weight and their units before relying on this output.

TDEE Calculator accuracy, checks and limitations

  • TDEE Calculator units check: confirm Sex, Age (years), Weight (kg), Height (cm), and Activity level before calculating.
  • TDEE Calculator result check: compare TDEE (maintenance), Mild fat loss (−500), Aggressive cut (−750), Lean bulk (+300), and BMR with the substituted formula steps and the displayed rounding precision.
  • TDEE Calculator: This is a general estimate, not a diagnosis or personal medical advice. Discuss health decisions with a qualified clinician.

Formula, derivation and worked example

TDEE is everything you burn in a day: resting metabolism, digestion, movement and training. Eat at TDEE and weight holds steady; a 500 kcal daily deficit loses roughly half a kilo a week.

TDEE = BMR × activity factor

Substitution steps

  1. 1. TDEE
    BMR × activity
    = 2,527 kcal

Computed example results

TDEE (maintenance)
2,527 kcal/day
Mild fat loss (−500)
2,027 kcal/day
Aggressive cut (−750)
1,777 kcal/day
Lean bulk (+300)
2,827 kcal/day
BMR
1,630 kcal/day

Understanding the result

Read the main result together with supporting checks, assumptions, limits and intermediate values.

For a manual check, repeat the first equation, confirm the units and change one input at a time.

Assumptions and calculation scope

  • Age is assumed to be entered in years; converting from another unit before entry avoids changing the numerical meaning of the calculation.
  • Sex is assumed to match the real case. Choosing a different available option can change the method, factor or interpretation used by this calculator.
  • TDEE Calculator applies the displayed TDEE = BMR × activity factor relationship to the entered health inputs. Factors that are not exposed as inputs or stated assumptions are outside this calculator's calculation scope.

Common mistakes when using TDEE Calculator

  • Do not mix units for Age (years), Weight (kg), Height (cm). A unit mismatch changes the input magnitude even when the typed number looks reasonable.
  • Do not leave Sex on the default choice unless that choice matches the real scenario; the selected option can change the calculation path or factor.
  • Do not replace the displayed TDEE = BMR × activity factor relationship with a different convention without also changing the underlying assumptions; compare like-for-like methods when checking the result.
  • Do not treat TDEE (maintenance) = 2,527 kcal/day from the worked example as a universal answer. It belongs to the displayed example inputs and must be recalculated for the actual case.

When the TDEE Calculator is useful

TDEE Calculator is designed for cases where Sex, Age, Weight, Height are known and you need TDEE (maintenance), Mild fat loss (−500), Aggressive cut (−750). The page keeps the live calculator, calculation method and worked example together so the result can be checked instead of treated as a black-box number.

Use the calculator for the scope described by its inputs and notes. The displayed method is TDEE = BMR × activity factor. If the real project or decision needs factors that are not represented here, treat the result as an estimate and add the missing checks separately.

Sex and Age: what changes the answer

The worked example uses Sex = Male, Age = 30 years, Weight = 70 kg, Height = 172 cm. With those values, TDEE (maintenance) is 2,527 kcal/day. Changing an input should be interpreted according to that field's unit, range, option and hint rather than by the number alone.

For this calculator, the main input roles are: Sex: Select the option that matches the real installation or scenario. Available choices include Male, Female. Age (years): Measured or known age used by the calculation engine. Weight (kg): Measured or known weight used by the calculation engine. Height (cm): Measured or known height used by the calculation engine.

How to sanity-check a TDEE Calculator result

Start by confirming the entered values and units, then compare the substituted working with the displayed formula or calculation steps. Pay particular attention to TDEE (maintenance), because it is the first worked-example output shown by the live engine.

Finally, compare the result with the assumptions, warnings and related calculators on this page. A nearby calculator can be useful as a cross-check when it measures the same workflow from a different input or output direction.

Next logical calculator

Continue with BMR Calculator

Useful next check because both tools use Sex and Age, while BMR Calculator answers a different part of the same workflow.

Open BMR Calculator

Formula

  • TDEE = BMR × activity factor

TDEE is everything you burn in a day: resting metabolism, digestion, movement and training. Eat at TDEE and weight holds steady; a 500 kcal daily deficit loses roughly half a kilo a week.

Frequently asked questions

What inputs does the TDEE Calculator use?

It uses Sex, Age, Weight, Height, and Activity level. Follow the unit printed for each field and choose any selectable option to match the real scenario.

What does the TDEE Calculator calculate?

It calculates TDEE (maintenance), Mild fat loss (−500), Aggressive cut (−750), Lean bulk (+300), and BMR. With the displayed default inputs, TDEE (maintenance) is 2,527 kcal/day.

Which formula does the TDEE Calculator use?

The primary relationship is TDEE = BMR × activity factor. The page also shows substituted values and calculation steps so the result can be checked independently.

How can I verify a TDEE Calculator result?

First verify the units for Sex, Age, and Weight. Then compare the substituted formula steps with TDEE (maintenance) and its displayed precision.

What are the limitations of the TDEE Calculator?

TDEE Calculator: This is a general estimate, not a diagnosis or personal medical advice. Discuss health decisions with a qualified clinician.

Where can I find related Health tools?

Use the related-tools section on this page to compare another method, change units or continue the same health calculation.

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