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IF Calorie Calculator | Nutrition
IF Calorie Calculator - Intermittent fasting: TDEE calories compressed into eating window (typically 16:8 = 8h eating, 16h fast)
Built by an engineer who chases finish lines and is obsessed with data. Thomas Prommer — technology executive who has worked with Google, Apple, Nike, Adidas, Netflix and other global brands. Also an Ironman finisher, HYROX Pro Division competitor, and marathon runner. These tools combine engineering rigor with real race experience.
IF Calorie Calculator
Intermittent fasting: TDEE calories compressed into eating window (typically 16:8 = 8h eating, 16h fast).
Methodology
Intermittent fasting: TDEE calories compressed into eating window (typically 16:8 = 8h eating, 16h fast). Same calorie target as non-IF.
FAQ
How does this calculator work?
Intermittent fasting: TDEE calories compressed into eating window (typically 16:8 = 8h eating, 16h fast). Same calorie target as non-IF.
How accurate is this estimate?
Based on validated formulas with ~10% margin. Individual metabolism varies.
Should I consult a professional?
Yes, especially for medical conditions, eating disorders, or significant weight changes.
How often should I recalculate?
Every 2-4 weeks or after 2-3 kg of weight change.