// multi-utility computation suite · offline · instant · precise
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health.caloric-intake-iifym Calculator
Calculates IIFYM (If It Fits Your Macros) daily targets from TDEE and a chosen macro split, in grams per day and per meal. IIFYM allows dietary flexibility within macronutrient constraints — the approach that made flexible dieting mainstream.
Inputs
Body Weight Kg
Body or object weight. For health calculators, usually in kg or lbs.
Body Fat Pct
Fat tissue as a percentage of total weight. Healthy ranges: men 10–20%, women 18–28%. Below 5% (men) or 12% (women) risks health complications.
Activity Multiplier
Reference formula or conversion factor shown for context.
Goal
Reference formula or conversion factor shown for context.
Results
TDEE (maintenance calories)
Sample size or count used in the calculation.
target calories
Reference formula or conversion factor shown for context.
protein (g)
Sample size or count used in the calculation.
fat (g)
The value at the specified point or condition.
carbohydrates (g)
The value at the specified point or condition.
lean body mass (kg)
Body weight minus fat mass — muscle, bone, organs, and water. More useful than total weight for fitness assessments and medication dosing.