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TEFLab
Roughly 10% of daily calories are spent on digestion.
Your body spends energy breaking down, absorbing, and processing the food you eat — this 'cost of digestion' is the thermic effect of food, and it varies by macronutrient (protein has the highest thermic cost, fat the lowest).
TEF typically accounts for around 10% of total calories burned in a day — real but modest compared to basal metabolism and activity, which is why it's often folded into TDEE estimates rather than tracked separately.
Daily energy expenditure with personalised macro splits.
OpenBody mass index with healthy-range guidance.
OpenUS Navy circumference method for body fat percentage.
OpenDaily hydration target based on weight, activity, and climate.
OpenTEF (kcal burned digesting)
220
Thermic Effect of Food ≈ 10% of daily intake.
What you entered
TEF ≈ 10% of daily calories
2200 × 0.10= 220 kcalResult
TEF (kcal burned digesting): 220
Digesting 2200 kcal worth of food burns roughly 220 kcal on its own.