This calculation is for informational purposes. For critical financial or health decisions, please consult with a professional.
Energy needs vary by person, activity, and season of training. These estimates come from textbook formulas: helpful for ballparks and classroom examples, but always pair numbers with real-world guidance from qualified professionals.
Harris–Benedict and Mifflin–St Jeor lines descend from early metabolic cart studies; wearables now personalize TDEE but still lean on anthropometric regressions at the core.
BMR ≈ f(sex, age, height, weight); TDEE ≈ BMR × activity factor.
These are population-fit curves—uncertainty bands ±10–20% are normal. Treat outputs as conversation starters with clinicians or dietitians, not diagnoses.
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These are independent references—government labs, international measurement bodies, or university course materials—that explain the definitions behind the numbers. We don’t endorse third-party sites; we point to them for deeper reading.
Short version: Formula: TDEE - Goal Deficit = Daily Calorie Target.
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Total Daily Energy Expenditure: the total number of calories you burn in a day including exercise.
Yes, for most adults, a 500-calorie daily deficit is considered a sustainable and safe way to lose weight.
Algorithms blend heart rate, accelerometer drift, and guessed stride lengths; align devices by trend, not absolute kcal.
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