Calorie Deficit Equation:
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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 taps into stored energy (fat) to make up the difference.
The calculator uses the simple equation:
Where:
Explanation: The equation calculates how many calories you should consume daily to achieve your desired deficit while accounting for your energy expenditure.
Details: Creating an appropriate calorie deficit is crucial for sustainable weight loss. Too large a deficit can lead to muscle loss and metabolic adaptation, while too small may not produce noticeable results.
Tips: Enter your TDEE (calculated from other tools or formulas) and your desired daily calorie deficit. A deficit of 500 kcal/day typically results in about 1 pound (0.45 kg) of weight loss per week.
Q1: What's a safe calorie deficit?
A: Generally 300-500 kcal/day for moderate weight loss, or up to 20% of TDEE. Extreme deficits (>1000 kcal/day) should be medically supervised.
Q2: How do I know my TDEE?
A: Use online TDEE calculators that account for your age, gender, weight, height, and activity level.
Q3: Will I lose weight faster with a bigger deficit?
A: While you may lose weight faster initially, very large deficits can be unsustainable and may lead to muscle loss and metabolic slowdown.
Q4: Should I adjust my deficit as I lose weight?
A: Yes, as you lose weight your TDEE decreases, so your deficit should be recalculated periodically for continued progress.
Q5: Is calorie deficit the only factor for weight loss?
A: While calorie balance is primary, macronutrient distribution, meal timing, and exercise type can affect body composition and hunger levels.