Macro Calculator

How to use the Macro Calculator

1. Enter your daily calorie target (use our Calorie Calculator if you need to find this first).
2. Select a preset macro split (balanced, high-protein, low-carb, keto) or enter custom percentages.
3. View your personalized daily targets for protein, carbohydrates, and fat in grams.
4. Adjust the calorie target or split to compare different dietary approaches.

Why protein targets get more attention than carbs or fat in most macro guidance

Protein plays a specific, well-established role in preserving muscle mass, particularly during a calorie deficit. This is why many macro-tracking approaches set a protein target first (often based on body weight) and then divide remaining calories between carbs and fat, rather than treating all three macronutrients as equally flexible. Carb and fat ratios have a wider range of reasonable options depending on personal preference and how someone's body responds, which is why most guidance is more prescriptive about protein specifically than about the carb/fat split.

Frequently asked questions

How is the protein target calculated?

Commonly based on body weight and activity level, following ranges frequently cited in sports nutrition guidance for people who exercise regularly. Individual needs vary, and this should be treated as a reasonable starting estimate.

Do I need to hit my macros exactly every single day?

No. Most nutrition guidance treats daily macro targets as a rough average to aim for over time (say, a week), not a number that needs to be hit precisely every single day to see results.

Should I follow a specific macro split, like keto or a specific diet?

This tool provides general balanced-ratio estimates; a specific dietary approach (ketogenic, high-protein, etc.) generally requires deliberately overriding the default ratios to match that approach's specific requirements, which is worth discussing with a doctor or dietitian if you have a specific medical reason to follow one.