Nutrition

Macro Calculator

Split calories into protein, carbs, and fat.

Runs instantlyCopy individual resultsReset example valuesWorks on mobile

How to use this tool

Enter your values, run the tool, then review the result cards. Most tools update automatically when inputs change, so you can test several scenarios quickly.

Example inputs

Calories/day: 2200
Protein %: 30
Carbs %: 40
Fat %: 30

Results this page provides

Protein grams
Carb grams
Fat grams

How it works

Calories are split by percentage, then converted using 4 calories per gram for protein/carbs and 9 for fat.

Best use cases

Plan meal targets for a calorie goal.

Limitations

Macro needs depend on goals, adherence, medical status, and food quality.

FAQ

Common questions

Is this tool free?

Yes. It is free and runs as a static browser page.

Can I copy the result?

Yes. Copy all results or copy a single result card.

Does it require an account?

No account is required.

Should I verify important outputs?

Yes. Use this as a practical helper and verify important results before relying on them.