Weight Loss Timeline
Health & FitnessCalculate the estimated number of weeks and target date to reach your goal weight based on daily caloric deficit, metabolic TDEE, and safe rate of fat loss.
≈ 154 days to lose 10 kg at 500 kcal/day deficit
About this calculator
Setting realistic expectations for weight loss is vital for long-term dietary adherence and metabolic health. Losing weight too rapidly risks muscle wasting and metabolic slowdown, whereas a consistent moderate calorie deficit produces sustainable fat loss.
This calculator takes your current weight, goal weight, and planned daily calorie deficit (e.g. 500 kcal/day for ~1 lb fat loss per week), computing your exact target date and weekly weight loss milestones.
How It Works & Formula
One pound of body fat contains approximately 3,500 kcal of stored energy. Weekly Fat Loss = (Daily Deficit × 7) / 3,500 lbs. Total Weeks = Total Weight to Lose / Weekly Fat Loss Rate. Target Date = Current Date + (Total Weeks × 7 days).
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