// multi-utility computation suite · offline · instant · precise
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sci.Harris-Benedict-BMR-revised Calculator
Calculates basal metabolic rate using the revised Harris-Benedict equation and estimates total energy expenditure from activity level multiplier. Revised Harris-Benedict (Roza & Shizgal 1984) is more accurate than the 1919 original — sedentary activity factor = 1.2; vigorous exercise = 1.725.
Inputs
Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Height Cm
Vertical measurement. For health calculators, typically standing height without shoes.
Age Yr
Age in completed years. Many health and fitness formulas adjust for age.
Sex Male
Reference formula or conversion factor shown for context.
Activity
A multiplier applied in the calculation.
Results
BMR (Mifflin-St Jeor, kcal/day)
Sample size or count used in the calculation.
TDEE — total daily energy (kcal/day)
Your calorie maintenance level — the daily intake needed to hold current weight. Eat below this to lose weight; above to gain.
BMR = 10W + 6.25H − 5A ± 5 (male/female)
Reference formula or conversion factor shown for context.
activity multiplier
Rate of radioactive decay events per second (becquerels or curies). Decreases exponentially with time.
macros at maintenance (protein priority)
The value at the specified point or condition.
weight management
The computed weight (gravitational force) or mass.