Weight Loss Formula:
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The Weight Loss Date Calculator estimates when you'll reach your goal weight based on your current weight, goal weight, and daily calorie deficit. It uses the principle that 1 pound of fat equals approximately 3500 calories.
The calculator uses the weight loss formula:
Where:
Explanation: The formula calculates how many days it will take to burn the calories equivalent to your weight loss goal at your current daily deficit.
Details: Setting realistic weight loss goals helps maintain motivation and ensures healthy, sustainable progress. A safe rate is generally 1-2 pounds per week.
Tips: Enter your current date, current weight in pounds, goal weight in pounds, and your daily calorie deficit. All values must be valid (current weight > goal weight, deficit > 0).
Q1: Is the 3500 calories per pound rule exact?
A: It's an approximation. Actual fat loss can vary based on body composition and metabolic changes during weight loss.
Q2: What's a safe daily calorie deficit?
A: Generally 500-1000 kcal/day for 1-2 lbs/week loss. Extreme deficits can be unhealthy and unsustainable.
Q3: Why might my actual results differ?
A: Metabolic adaptation, water weight fluctuations, and changes in activity level can affect actual progress.
Q4: Should I adjust my deficit as I lose weight?
A: Yes, as your weight decreases, your maintenance calories decrease too, so you may need to adjust your intake or activity.
Q5: Does this account for muscle gain during weight loss?
A: No, this assumes pure fat loss. If you're building muscle through exercise, your weight loss may appear slower.