Macro Calculator

Quickly calculate your daily macronutrient needs with our free Macro Calculator. Perfect for tracking calories and macros to support weight loss, muscle gain, or balanced nutrition.


Free Macro Calculator – Determine Your Ideal Daily Macros for Optimal Health

Whether you’re trying to lose weight, gain muscle, or maintain your current body composition, understanding your daily macronutrient requirements is key. Our Macro Calculator helps you determine exactly how much protein, fat, and carbohydrates you should consume daily based on your body, lifestyle, and fitness goals.


Macro Calculator

age 18 - 80
cm
kg
Settings
BMR estimation formula:
%

What Are Macros?

Macros, short for macronutrients, are the three primary nutrients that provide energy:

  • Proteins – essential for muscle repair and growth
  • Fats – crucial for hormone production and brain health
  • Carbohydrates – your body’s main source of fuel

Tracking your macros ensures you’re fueling your body with the right balance of nutrients.


How the Macro Calculator Works:

Just enter your:

  1. Age
  2. Gender
  3. Height
  4. Weight
  5. Activity Level
  6. Fitness Goal (Weight Loss, Maintenance, Muscle Gain)

The calculator instantly gives you:

  • Total daily calorie target
  • Recommended intake of protein, carbs, and fats (in grams and percentages)
  • Macro ratio tailored to your goal (like 40/30/30 or 50/25/25)

Why Use Calculator Hub HQ’s Macro Calculator?

  1. Backed by nutrition science
  2. Customizable for different goals
  3. Easy-to-understand results
  4. Mobile & desktop friendly
  5. 100% free, no sign-up required

Who Should Use This Macro Calculator?

This calculator is great for:

  • Athletes & bodybuilders optimizing performance and muscle growth
  • People on ketogenic, paleo, or low-carb diets
  • Anyone following a flexible dieting or IIFYM approach
  • Fitness beginners looking to eat smarter
  • Health-conscious individuals seeking balance and portion control

Frequently Asked Questions

What is a macro calculator used for?

A macro calculator estimates how many grams of protein, fat, and carbs you should eat daily based on your body and goals.

Is this tool accurate?

Yes, it’s based on scientifically supported formulas like the Mifflin-St Jeor equation and commonly used macro ratios.

Can I use this for keto or low-carb diets?

Absolutely. You can manually adjust your macro ratios after calculation to suit specific diets like keto.

Do I need to count calories too?

The calculator provides your total daily calorie target along with macro breakdowns, so you can track both if you like.

Will this help me lose weight?

Tracking your macros helps you maintain the right calorie deficit for weight loss while preserving muscle.