Macro Calculator

Calculate your ideal daily macronutrient targets — protein, carbohydrates, and fat — based on your body stats, activity level, and fitness goal. Whether you're cutting, bulking, or maintaining, get precise macro targets.

Macro Calculator

What Are Macronutrients?

Macronutrients are the three main nutrients your body uses for energy: protein (4 cal/g), carbohydrates (4 cal/g), and fat (9 cal/g). Tracking macros gives you more control over body composition than simply counting calories — high protein preserves muscle during a cut, adequate carbs fuel performance, and healthy fats support hormonal function.

Macro Split Reference

GoalProteinCarbsFat
Fat Loss35–40%25–35%25–30%
Maintenance25–35%35–45%25–35%
Muscle Gain25–35%40–50%20–30%
Keto20–30%5–10%60–75%

Frequently Asked Questions

How much protein do I need per day?+
General guidelines recommend 0.7–1g of protein per pound of body weight for active individuals. Higher protein (1–1.2g/lb) is beneficial during cutting phases to preserve muscle mass.
What is flexible dieting (IIFYM)?+
IIFYM (If It Fits Your Macros) means you can eat any foods as long as your daily macro targets are hit. This approach is less restrictive than clean eating while still achieving body composition goals.

Related Calculators

TDEE Calculator Calorie Calculator BMI Calculator Body Fat Calculator Protein Calculator

About the Macro Calculator

This free macro calculator helps you get accurate results instantly without needing to work through the math manually. Whether you need a quick estimate or a precise figure, having a reliable tool on hand saves time and reduces errors compared to manual calculation.

How to Use This Calculator

  1. Enter your values in the input fields above. Each field is labeled to guide you.
  2. Double-check your inputs — results are only as accurate as the numbers you enter.
  3. Click the Calculate button to see your result instantly.
  4. Use the result for your planning, budgeting, or decision-making.

Why Accurate Calculations Matter

Small errors in math calculations can compound into significant problems. A 1% miscalculation in a budget or measurement can translate to hundreds or thousands of dollars in wasted resources, or result in having to redo work entirely. This calculator uses the standard formulas and methods to give you reliable results you can trust.

Tips for Getting the Best Results

Frequently Asked Questions

Is this calculator free? Yes — completely free with no account, login, or payment required. Use it as many times as you need.

How accurate are the results? This calculator uses the standard formulas for macro calculations. Results are accurate for typical use cases. For specialized or high-stakes applications, consult a professional.

Does it work on mobile? Yes. This calculator is fully responsive and works on smartphones, tablets, and desktops.