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Home / Health & Fitness Calculators / Cutting Macro Calculator
Health & Fitness Calculators

Cutting Macro Calculator

Updated onSeptember 1, 2025 4:21 am















A Cutting Macro Calculator helps you determine your daily macros for fat loss by calculating:

  • Protein intake based on body weight
  • Fat intake as percentage of calories
  • Carbohydrate intake from remaining calories

It’s ideal for:

  • Bodybuilders during cutting phases
  • Fitness enthusiasts aiming for fat loss
  • Anyone tracking macros for weight management

🔹 Formula Used

  1. Protein (g):

Protein (g)=Body Weight (lbs)×Protein Ratio (g/lb)\text{Protein (g)} = \text{Body Weight (lbs)} \times \text{Protein Ratio (g/lb)}Protein (g)=Body Weight (lbs)×Protein Ratio (g/lb)

  1. Fat (g):

\text{Fat Calories} = \text{Total Calories} \times \frac{\text{Fat %}}{100}, \quad \text{Fat (g)} = \frac{\text{Fat Calories}}{9}

  1. Carbs (g):

Remaining Calories=Total Calories−(Protein Calories+Fat Calories)\text{Remaining Calories} = \text{Total Calories} – (\text{Protein Calories} + \text{Fat Calories})Remaining Calories=Total Calories−(Protein Calories+Fat Calories) \text{Carbs (g)} = \frac{\text{Remaining Calories} \times \text{Carb %}}{4}


🔹 How to Use the Calculator

  1. Enter your body weight in pounds.
  2. Enter your daily calories for cutting.
  3. Enter protein ratio (grams per pound of body weight).
  4. Enter fat percentage of total calories.
  5. Enter carb percentage of remaining calories.
  6. Click Calculate to see:
    • Protein grams
    • Fat grams
    • Carbs grams

🔹 Example Calculation

  • Body Weight: 160 lbs
  • Daily Calories: 1800 kcal
  • Protein: 1 g/lb → 160 g
  • Fat: 25% → 450 kcal → 50 g
  • Carbs: 100% of remaining → 1190 kcal → 297.5 g

Result:

  • Protein: 160 g
  • Fat: 50 g
  • Carbs: 297.5 g

🔹 Benefits of Using This Calculator

  • Determines accurate macros for cutting.
  • Helps preserve muscle while losing fat.
  • Supports diet planning and tracking.
  • Easy and quick to calculate personalized macros.

🔹 FAQs

Q1: What is protein ratio?
Grams of protein per pound of body weight to preserve muscle during cutting.

Q2: Can I adjust calories?
Yes, adjust daily calories according to your cutting plan.

Q3: Can I use kg instead of lbs?
Yes, adjust protein ratio accordingly (g per kg).

Q4: Can fat % be higher or lower?
Yes, adjust based on your diet preference.

Q5: Can carb % be less than 100% of remaining calories?
Yes, split remaining calories between carbs and others if desired.

Q6: Does it include fiber?
No, this calculator focuses on macronutrients only.

Q7: Can I calculate for bulking?
Yes, just enter higher daily calories.

Q8: Can I embed it on my website?
Yes, the HTML+JS code is ready to embed.

Q9: Are the calculations exact?
They are mathematically precise based on input; real results may vary slightly.

Q10: Can it help me hit fitness goals?
Yes, especially for fat loss while maintaining muscle.

Q11: Can I calculate for multiple users?
Yes, enter different body weights and calories for each.

Q12: Can I adjust protein ratio for advanced athletes?
Yes, typical cutting range = 0.8–1.2 g per lb body weight.


🔹 Conclusion

The Cutting Macro Calculator is a simple and reliable tool to calculate protein, fat, and carbohydrate needs for fat loss. It helps fitness enthusiasts and bodybuilders plan meals, preserve muscle, and achieve cutting goals efficiently.

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