How to count macros

By the C for Calories team · Updated October 12, 2026

Counting macros means tracking protein, carbohydrates and fat, not just calories. Here's how to set your targets and hit them without obsessing.

What are macros?

Macronutrients are the three nutrients that provide calories:

MacroCalories per gramMain job
Protein4Builds and repairs muscle; keeps you full
Carbohydrates4Fuel, especially for exercise
Fat9Hormones, absorbing vitamins; very energy-dense

Alcohol also provides calories (about 7 per gram) but isn't counted as a macro.

Set your targets

  1. Calories first. Find your daily calories for your goal with the calorie calculator.
  2. Protein by body weight. About 1.6–2.2 g per kg (0.7–1 g per lb).
  3. Fat at 25–30% of calories.
  4. Carbs fill the rest.

The macro calculator does this for you.

An example

A 70 kg person eating 2,000 kcal to lose weight:

MacroTargetCalories
Protein140 g (2.0 g × 70 kg)560 kcal
Fat67 g (30%)600 kcal
Carbs210 g (the rest)840 kcal

How to hit them

FAQ

Frequently asked questions

Do I need to count macros to lose weight?

No: calories determine weight loss. Counting protein as well helps you keep muscle and stay full, which is why many people track both.

What's the best macro ratio?

There isn't one best ratio. Set protein by body weight, keep fat at a moderate level, and let carbs fill the rest to suit your preferences.

Can I count macros from photos?

Yes. Photo estimates in C for Calories include protein, carbs and fat for every food.