Weight Loss Formula:
From: | To: |
This calculator helps determine the total calorie deficit needed to achieve weight loss goals based on daily calorie reduction over a specified period.
The calculator uses the weight loss formula:
Where:
Explanation: A daily deficit of 500 kcal typically results in approximately 1 pound of weight loss per week, as 3500 kcal deficit equals 1 pound of fat loss.
Details: Creating a consistent calorie deficit is fundamental to weight loss. Understanding the total deficit helps in planning sustainable weight loss strategies and setting realistic timelines.
Tips: Enter daily calorie deficit (typically 500 kcal for 1 lb/week loss) and the number of days for your weight loss period. All values must be valid positive numbers.
Q1: Why 500 kcal daily deficit for 1 lb/week?
A: Since 1 pound of fat equals approximately 3500 calories, a 500 kcal daily deficit over 7 days equals 3500 kcal, resulting in 1 pound of weight loss per week.
Q2: Can I use a different daily deficit?
A: Yes, you can adjust the daily deficit based on your weight loss goals, but 250-1000 kcal deficit is generally recommended for sustainable weight loss.
Q3: Is weight loss linear?
A: No, weight loss may vary due to water retention, muscle gain, metabolic adaptation, and other factors. This provides an estimate based on calorie math.
Q4: Should I only focus on calories?
A: While calories are important, also consider nutrition quality, protein intake, exercise, and overall lifestyle for optimal health and sustainable weight loss.
Q5: How accurate is this calculation?
A: This provides a theoretical estimate. Individual results may vary based on metabolism, body composition, activity level, and other physiological factors.