Intermittent Fasting Eating Window
Calculator

Inputs

Eating window length (hours)
8

Results

Eating window length (hours)
8
Eating window end (24h clock)
20

Nutrition results

Eating window length (hours)8
Eating window end (24h clock)20

formula-map diagram

Eating window length (hours)
8
Eating window end (24h clock)
20

Nutrition formula map

Formula

eating window h = 24 − fasting h; window end = start hour + window hours (mod 24)

= 8

Note

Simplified nutrition model using standard reference constants (protein and carbohydrate 4 kcal/g, fat 9 kcal/g, alcohol 7 kcal/g, 1 kg of body fat about 7700 kcal, salt to sodium factor 0.393). Real energy needs and body composition changes vary between individuals. This is not medical, dietetic or nutritional advice; consult a qualified health professional before changing your diet.

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