Weight Loss Time Equation:
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The weight loss time equation estimates how long it will take to reach your goal weight based on your current weight and daily caloric deficit. It's based on the principle that 1 pound of body fat equals approximately 3,500 calories.
The calculator uses the weight loss equation:
Where:
Explanation: The equation calculates how many days it will take to burn the calories equivalent to your desired weight loss at your current daily deficit.
Details: Understanding the time required for weight loss helps set realistic expectations and maintain motivation. A safe rate of weight loss is generally 1-2 pounds per week.
Tips: Enter your current weight and 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: While commonly used, it's an estimate. Actual fat loss can vary based on body composition and metabolic changes during weight loss.
Q2: Why might actual results differ?
A: Metabolic adaptation, changes in activity levels, water retention, and measurement errors can all affect actual results.
Q3: What's a healthy daily calorie deficit?
A: Typically 500-1000 kcal/day for 1-2 lbs/week loss. Very large deficits can be unhealthy and counterproductive.
Q4: Does this account for plateaus?
A: No, the calculation assumes linear weight loss. Most people experience plateaus that may require adjustments.
Q5: Should I recalculate as I lose weight?
A: Yes, recalculating periodically with updated weights and deficits can provide more accurate projections.