1. What is the Calorie Weight Loss Calculator?

This calculator determines your daily calorie intake needed to reach your goal weight within a specified timeframe, based on your Total Daily Energy Expenditure (TDEE) and the principle that 1 kg of body weight equals approximately 7700 kcal.

2. How Does the Calculator Work?

The calculator uses two simple formulas:

Where:

• \( InitialWeight \) — Your current weight in kilograms
• \( GoalWeight \) — Your target weight in kilograms
• \( Days \) — Number of days to reach your goal
• \( TDEE \) — Your Total Daily Energy Expenditure in kcal/day
• 7700 — kcal equivalent of 1 kg body weight

Explanation: The calculator determines the daily calorie deficit needed to lose the specified weight in the given timeframe, then subtracts this from your TDEE to give your daily calorie target.

3. Importance of Calorie Deficit

Details: Weight loss occurs when you consume fewer calories than you burn. A moderate deficit (typically 500 kcal/day) is recommended for sustainable weight loss of about 0.5 kg per week.

4. Using the Calculator

Tips: Enter your current weight and goal weight in kg, the number of days to reach your goal, and your estimated TDEE. All values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Why 7700 kcal per kg?
A: This is the approximate energy contained in 1 kg of body fat, though individual results may vary slightly.

Q2: What's a safe rate of weight loss?
A: Generally 0.5-1 kg per week is recommended for sustainable loss without excessive muscle loss.

Q3: How accurate is this calculator?
A: It provides a theoretical estimate. Actual results depend on adherence, metabolic adaptation, and other factors.

Q4: Should I eat below 1200 kcal/day?
A: Not without medical supervision. Very low calorie diets can be dangerous and counterproductive.

Q5: What if my weight loss stalls?
A: As you lose weight, your TDEE decreases. You may need to recalculate periodically or increase activity.