How it works
The macro calculator starts with your calorie target, applies the selected macro split, then converts protein, carbs, and fat from calories into grams.
Protein, carbs, fat
Macro Calculator
Calculate protein, carbs, and fat grams for weight loss, maintenance, or higher-protein eating, then split your macros across meals.
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Formula explanation
Protein and carbs use 4 calories per gram, while fat uses 9 calories per gram. For example, 30% protein on a 2,000 calorie target equals about 150 grams of protein per day.
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Quick Answers
How are macro grams calculated?
Macro grams are calculated by turning a calorie target into protein, fat, and carb calories, then converting those calories into grams.
Protein and carbs use 4 calories per gram, while fat uses 9 calories per gram. A 2,000 calorie target with 30% protein is about 150 grams of protein.
What is a good macro split for beginners?
A balanced split is usually the simplest beginner starting point.
Use the preset as a practical estimate, then focus on consistency, enough protein, and food choices you can repeat.
Should I track macro percentages or grams?
Track grams when you are planning meals, because food labels and tracking apps usually use grams.
Percentages are useful for choosing a split, but grams are easier to apply to daily meals and snacks.
How should I split macros across meals?
Split macros across meals in a way you can repeat consistently.
The per-meal split divides the same daily target into 3 meals, 4 meals, or 3 meals plus a snack.
Why is protein often the anchor macro?
Protein is often treated as the anchor because many people want a steady protein target for satiety or training support.
The protein anchor compares daily protein grams with body weight as an educational signal, not a medical target.
Are macro targets exact?
Macro targets are estimates, not exact prescriptions.
Use them as a starting point, then adjust after comparing your consistency, energy, and real progress over time.
Guides
FAQ
What are macros?
Macros are macronutrients: protein, carbohydrates, and fat. They provide most of the calories in food.
What macro split should I use?
A balanced split is a reasonable starting point for many beginners, while high-protein or lower-carb splits can fit different preferences.
How does this macro calculator calculate protein, carbs, and fat?
It applies your selected macro percentages to daily calories, then converts protein and carbs at 4 calories per gram and fat at 9 calories per gram.
Is a high-protein macro split better for weight loss?
A high-protein split may help some users with satiety, but total calories, consistency, and food quality still matter.
Can I use this macro calculator for muscle gain?
Yes. Choose a gain goal or higher-protein plan to estimate a starting macro target for lean-bulk planning.
Is this medical advice?
No. Macro results are educational estimates and are not medical advice.