Method Deck / health

Total daily energy expenditure from BMR and activity

Multiplies a basal metabolic rate by a cited activity factor to estimate total daily energy expenditure.

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Inputs

• bmr (number, kcal/day, required) min 0 : Basal metabolic rate
• activity_level (string, required) one of: sedentary, lightly_active, moderately_active, very_active, extra_active : Activity level category

Outputs

• tdee (kcal/day): Estimated total daily energy expenditure

Steps

1. Look up the activity factor for the given activity_level from the cited table.
2. tdee = bmr * activity_factor, rounded to the nearest whole kcal/day.

Constants

• sedentary = 1.2 multiplier (source: Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate)
• lightly_active = 1.375 multiplier (source: Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate)
• moderately_active = 1.55 multiplier (source: Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate)
• very_active = 1.725 multiplier (source: Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate)
• extra_active = 1.9 multiplier (source: Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate)

Sources

• Physical activity factor (PAL) table for estimating total energy expenditure from resting/basal metabolic rate (American College of Sports Medicine / Wolters Kluwer, 2026-09-30T19:10:00Z) - Standard sedentary-through-extra-active multiplier table used to scale BMR to TDEE.

Worked example and test vectors

Published card

• Address: d73922607b4c9ca98abd3f74d31244be
• Made at: 2026-09-30T22:39:30.722Z
• Method sha256: 36ac1156017bc95222574556daefa70fe981df6862007992564703ac5414df29