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Calorie Deficit Calculator
Calculate the daily calorie deficit needed to reach your weight loss goal. Set a time target or weekly loss rate and see your projected weight timeline.
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Fonctionnalités Clés — Calorie Deficit Calculator
Calorie deficit by time goal or weekly loss
Daily and weekly deficit calculation
Target daily calorie recommendation
Projected weight at 4, 8, and 12 weeks
Safety warning for excessive deficits
Pourquoi Utiliser Cet Outil — Calorie Deficit Calculator
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Questions Fréquemment Posées — Calorie Deficit Calculator
What is a calorie deficit?
A calorie deficit occurs when you consume fewer calories than your body burns. Since approximately 3,500 calories equals 1 pound of fat, a 500 calorie/day deficit creates a weekly deficit of 3,500 calories, leading to roughly 1 pound of weight loss per week.
What is the maximum safe calorie deficit?
Most health authorities recommend a maximum deficit of 500–1,000 calories per day, corresponding to 1–2 pounds of weight loss per week. Deficits above 1,000 kcal/day can cause muscle loss, nutrient deficiencies, fatigue, and metabolic adaptation. Consult a doctor for larger deficits.
Does calorie deficit work for everyone?
The principle is universal — creating a calorie deficit leads to weight loss. However, individual metabolism, hormone levels, sleep quality, stress, and medical conditions all affect the rate. Results may differ from projections, and it is normal to lose weight faster at first and slower over time.