Calorie Deficit Formula:
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A calorie deficit occurs when you consume fewer calories than your body expends. This is the fundamental principle behind weight loss, as your body must use stored energy (fat) to make up for the energy shortfall.
The calculator uses a simple formula:
Where:
Explanation: A deficit of 500-1000 kcal/day is typically recommended for sustainable weight loss of 0.5-1 kg (1-2 lbs) per week.
Details: Creating an appropriate calorie deficit is crucial for effective and sustainable weight loss. Too large a deficit can lead to muscle loss, fatigue, and metabolic adaptation, while too small a deficit may not produce noticeable results.
Tips: Enter your estimated maintenance calories and your target daily intake. The calculator will show your daily calorie deficit. For accurate results, use a TDEE calculator to determine your maintenance calories.
Q1: What is a safe calorie deficit for weight loss?
A: A deficit of 500-1000 kcal per day is generally considered safe and sustainable for most people, resulting in 0.5-1 kg (1-2 lbs) of weight loss per week.
Q2: Can I create too large of a calorie deficit?
A: Yes, excessively large deficits can lead to muscle loss, nutrient deficiencies, fatigue, and may slow down your metabolism over time.
Q3: Should I adjust my deficit as I lose weight?
A: Yes, as you lose weight, your maintenance calories decrease, so you may need to recalculate your deficit periodically to continue progress.
Q4: Is exercise necessary with a calorie deficit?
A: While not strictly necessary for weight loss, exercise helps preserve muscle mass, improves health, and can create a larger deficit without drastically reducing food intake.
Q5: How do I know my maintenance calories?
A: Maintenance calories can be estimated using online TDEE calculators that consider your age, weight, height, gender, and activity level.