Daily Deficit Formula:
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A daily calorie deficit of 500 kcal is the standard recommendation for sustainable weight loss. This creates a 3500 kcal weekly deficit, which typically results in about 1 pound (0.45 kg) of fat loss per week.
The calculator uses a simple formula:
Where:
Explanation: This creates a moderate deficit that promotes fat loss while preserving muscle mass and minimizing metabolic adaptation.
Details: A controlled calorie deficit is essential for sustainable weight loss. Too large a deficit can lead to muscle loss, metabolic slowdown, and nutrient deficiencies, while too small a deficit may not produce noticeable results.
Tips: Enter your estimated maintenance calories based on your age, weight, height, and activity level. The calculator will determine your target calorie intake for weight loss.
Q1: Is a 500-calorie deficit appropriate for everyone?
A: While 500 kcal is a good starting point for most people, individual needs may vary based on starting weight, activity level, and metabolic health.
Q2: How do I calculate my maintenance calories?
A: Maintenance calories can be estimated using formulas like Mifflin-St Jeor or Harris-Benedict, or through metabolic testing.
Q3: Should I adjust my deficit over time?
A: Yes, as you lose weight, your maintenance calories decrease, so you may need to recalculate your deficit periodically.
Q4: Can I create a deficit through exercise instead of diet?
A: Yes, you can create a deficit through increased activity, reduced food intake, or a combination of both.
Q5: What if I'm not losing weight with a 500-calorie deficit?
A: You may need to reassess your maintenance calorie estimate or consider factors like water retention, measurement errors, or metabolic adaptation.