1. What is the Weight Loss Prediction Formula?

The weight loss prediction formula estimates how much weight you can lose based on your daily calorie deficit over a specific time period. It's based on the principle that a 3500 kcal deficit equals approximately 1 pound of fat loss.

2. How Does the Calculator Work?

The calculator uses the weight loss formula:

Where:

• \( deficit \) — Daily calorie deficit (kcal/day)
• \( days \) — Time period in days
• 3500 — Calories needed to burn 1 pound of fat

Explanation: The equation calculates total calorie deficit over time and converts it to pounds of fat loss.

3. Importance of Calorie Deficit

Details: Creating a calorie deficit is fundamental to weight loss. This calculator helps estimate realistic weight loss goals based on your planned deficit.

4. Using the Calculator

Tips: Enter your daily calorie deficit (difference between calories consumed and burned) and the time period in days. Both values must be positive numbers.

5. Frequently Asked Questions (FAQ)

Q1: Is the 3500 kcal per pound rule exact?
A: While widely used, it's an approximation. Actual weight loss can vary based on metabolic adaptation and body composition changes.

Q2: Why isn't my actual weight loss matching predictions?
A: Water retention, muscle gain, metabolic changes, and inaccurate calorie tracking can all affect actual results.

Q3: What's a healthy calorie deficit?
A: Generally 300-500 kcal/day for mild weight loss, up to 1000 kcal/day for more aggressive loss (under medical supervision).

Q4: Does the type of calories matter?
A: For weight loss, calorie deficit is primary, but nutrient quality affects health, satiety, and body composition.

Q5: Should I recalculate as I lose weight?
A: Yes, as your weight decreases, your maintenance calories typically decrease as well, requiring adjustment of your deficit.