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Health & FitnessGenerated accuracy model review: 2026-05-06

TDEE Calculator accuracy and testing

This page documents how Calwarden builds trust for this calculator: source notes, regression-style default tests, limitations, assumptions, unit handling, rounding, and visible change history.

Formula source

  • TDEE = BMR × Activity Factor. * **Sedentary:** BMR × 1.2 * **Lightly Active:** BMR × 1.375 * **Moderately Active:** BMR × 1.55 * **Very Active:** BMR × 1.725 * **Super Active:** BMR × 1.9

Test cases

Default input regression check

Generated from the checked-in default inputs and calculate function.

Inputs

  • BMR (Optional): 0
  • Gender: Male
  • Age: 30
  • Height (Ft): 5
  • Height (In): 10
  • Weight (lbs): 170
  • Activity Level: Lightly Active (1-3 days)

Expected outputs

  • Maintenance Calories: 2,389 kcal
  • Weight Loss (-500): 1,889 kcal
  • Weight Gain (+500): 2,889 kcal

Known limitations

  • This page documents the checked-in calculator logic and does not certify results for every real-world edge case.
  • Use the result as a planning estimate unless the calculator page states a stricter purpose.

Assumptions

  • TDEE is calculated from BMR multiplied by a broad activity factor rather than from direct energy-expenditure measurement.
  • Activity categories are simplified averages and are easy to overestimate.
  • Your true maintenance calories should be refined using body-weight trends over time.

Unit handling

  • BMR (Optional) accepts numeric values.
  • Gender accepts one of the configured options.
  • Age accepts numeric values.
  • Height (Ft) accepts numeric values.
  • Height (In) accepts numeric values.
  • Weight (lbs) accepts numeric values.
  • Activity Level accepts one of the configured options.
  • Maintenance Calories is displayed in kcal.
  • Weight Loss (-500) is displayed in kcal.
  • Weight Gain (+500) is displayed in kcal.

Rounding rules

  • Number displays use up to 2 decimal places in the calculator UI.

Version history

1.0.0 - 2026-05-06

Generated accuracy and testing page from the current tdee-calculator calculator definition.

Change log

2026-05-06

Published default regression test documentation and metadata fallbacks for TDEE Calculator.

Calculator transparency

Accuracy pages are generated from checked-in calculator definitions and can be upgraded with curated review metadata over time.

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