Macronutrient Calculator

Turn a daily calorie target into carbohydrate, protein, and fat grams using goal-based splits for balanced eating, fat loss, muscle gain, or endurance.

Last updated: 2026-03-16

Macronutrient calculator

Enter your values

Turn a daily calorie target into carbohydrate, protein, and fat grams using goal-based macro splits.

Daily Macro Split

Enter your calorie target and goal to estimate a practical daily macro breakdown.

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Example calculations

Tap an example to prefill the calculator with sample values.

Balanced 2200

2200 calories split for general nutrition

A middle-of-the-road macro split that stays inside adult AMDR ranges.

Result: About 275g carbs, 110g protein, and 73g fat

Fat-loss cut

1900 calories with higher protein

A more protein-forward split that still keeps carbs and fats inside standard adult ranges.

Result: Protein rises while carbs pull back modestly

Endurance block

2800 calories for a higher-carb training week

An endurance-oriented split with more room for glycogen-focused fueling.

Result: Higher carbs with a lighter protein and fat share

How to think about the output

Start with calories first, then use the macro split to structure meals. The grams are only as useful as the calorie target you feed into the tool, so it works best after you have already estimated maintenance, cut, or gain calories.

The per-meal numbers are there to make planning easier, not to force perfectly equal meals. Most people can still shift more carbs around training or more protein into meals they find easiest to build.

Macronutrient calculator FAQs

What the goal-based splits are doing, and when to switch to a more specialized tool.

Where do the macro percentages come from?

The splits stay inside standard adult Acceptable Macronutrient Distribution Ranges and then lean slightly toward the stated goal, such as more protein for fat loss or more carbohydrate for endurance work.

Is this better than a meal plan?

No. It is a fast planning tool for daily targets. A full meal plan still needs food preferences, training volume, digestion tolerance, and any medical context layered on top.

Can I use this for keto or very low carb eating?

Not really. This calculator is built for standard adult macro ranges. If you want a low-carb or keto-specific target, use the dedicated keto macro calculator instead.

Use a calorie target first, then move into a more specialized macro model if needed.

Keto Macro Calculator

Use a lower-carb framework with keto-specific calorie and macro targets.

Calorie Calculator

Estimate a daily calorie target before you break it into macros.

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Disclaimer

This calculator is for general nutrition planning only. It does not replace medical nutrition therapy, sports dietitian guidance, or individualized care.

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