1. What Is This Calculator?

This calculator estimates how long it will take to reach your weight loss goal based on your daily caloric deficit. It uses the scientifically established relationship between caloric deficit and fat loss.

2. How Does the Calculator Work?

The calculator uses the following equation:

Where:

• 7700 kcal ≈ energy in 1 kg of body fat
• Weight Loss — Your goal weight loss in kilograms
• Daily Caloric Deficit — Your planned daily calorie deficit

Explanation: The equation calculates how many days it will take to burn the equivalent energy stored in your target weight loss at your specified daily deficit.

3. Importance of Caloric Deficit

Details: Creating a consistent caloric deficit is the fundamental requirement for fat loss. This calculator helps you set realistic expectations about the time required to reach your goals.

4. Using the Calculator

Tips: Enter your weight loss goal in kilograms and your planned daily caloric deficit in kcal/day. For healthy weight loss, aim for a deficit of 300-1000 kcal/day (0.3-1 kg/week).

5. Frequently Asked Questions (FAQ)

Q1: Why 7700 kcal per kg?
A: This is the generally accepted estimate of energy stored in 1 kg of body fat, though individual variations exist.

Q2: Will the time estimate be exact?
A: No, this is an estimate. Actual results vary based on metabolic adaptation, water fluctuations, and other factors.

Q3: What's a safe caloric deficit?
A: Typically 300-1000 kcal/day, depending on your starting weight and activity level. Very large deficits can be counterproductive.

Q4: Does this account for plateaus?
A: No, the calculation assumes linear progress. Most people experience plateaus that may require adjustment.

Q5: Should I recalculate as I lose weight?
A: Yes, as your metabolism may slow with weight loss, requiring adjustment of your deficit to maintain progress.