Macro Calculation Formulas:
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This calculator determines your optimal daily calorie intake for weight loss based on your TDEE and desired deficit, then calculates the appropriate macronutrient distribution (30% protein, 40% carbs, 30% fat).
The calculator uses these formulas:
Where:
Details: Proper macronutrient distribution ensures you lose weight while maintaining muscle mass and energy levels. The 30/40/30 split is a balanced approach for sustainable weight loss.
Tips: Enter your TDEE (use a TDEE calculator if unknown) and desired deficit (typically 300-500 kcal/day for moderate weight loss). The calculator will show your daily intake and macro targets.
Q1: What's a safe calorie deficit?
A: 300-500 kcal/day is generally safe; extreme deficits (>1000 kcal) can be counterproductive.
Q2: Can I adjust the macro ratios?
A: This calculator uses standard ratios, but athletes may need more protein, while keto diets require more fat.
Q3: Why divide by 4 and 9?
A: Protein and carbs provide 4 kcal/g, while fat provides 9 kcal/g.
Q4: How accurate is this?
A: Results are estimates; individual needs may vary based on activity level and metabolism.
Q5: Should I track macros exactly?
A: Aim to be within 5-10g of targets; perfection isn't necessary for results.