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Nutrition

Macros for weight loss

Calories decide whether you lose weight; macros decide how good that loss feels and how much of it is fat rather than muscle. You don't need a complicated formula — just a protein-forward, balanced split you can actually maintain.

A note on nutrition: portion sizes and exact calories vary by ingredient and serving. Any nutrition figures are rough estimates for general guidance only and are not medical or dietary advice. For goals tied to specific calorie or macro targets, consult a registered dietitian or your healthcare provider.

First, the deficit

No macro split causes fat loss on its own — a calorie deficit does. Start by estimating your maintenance calories (TDEE) and eating roughly 300–500 kcal below it. If you haven't yet, work out your number with our calorie guide. Once the deficit is set, macros do the rest of the job: protecting muscle and keeping you full.

A simple split that works

A reliable starting point for most people is:

  • Protein — about 35% of calories (the priority).
  • Carbohydrate — about 35% of calories (fuel for training and daily life).
  • Fat — about 30% of calories (hormones and satiety).

This isn't a magic ratio — it's a balanced, sustainable one. You can shift carbs and fat to taste; what matters most is hitting your protein and staying near your calorie target.

Why protein leads

In a deficit, your body can break down muscle alongside fat. Eating enough protein — generally 1.6–2.2 g per kg of body weight (about 0.7–1.0 g per lb) — signals it to hold onto muscle, so more of the weight you lose is fat. Protein is also the most filling macronutrient, which makes the deficit far easier to live with.

Turn it into meals

Numbers only help if they reach your plate. Anchor each meal with a protein source, fill out the rest with vegetables and a sensible carb portion, and use fat for flavor. Browse high-protein foods for ideas, learn how to track macros without obsessing, and let the calculator set your personal targets.

Frequently asked questions

What is a good macro split for weight loss? +
A common, evidence-aligned starting split is roughly 35% protein, 35% carbohydrate, and 30% fat, eaten within a modest calorie deficit. Higher protein helps preserve muscle and keeps you full. Individual needs vary, so adjust based on results and how you feel — and consult a professional for tailored advice.
How much protein should I eat to lose weight? +
Research on preserving muscle during fat loss generally supports about 1.6–2.2 g of protein per kg of body weight (roughly 0.7–1.0 g per lb). Our calculator sets protein around 30–35% of calories, which usually falls within that range.
Do macros matter more than calories for weight loss? +
Calories drive whether you lose weight; macros shape the quality of that loss and how sustainable it feels. A calorie deficit is necessary for fat loss, while adequate protein and a balanced split help you keep muscle, manage hunger, and maintain energy.
Should I eat low-carb to lose weight? +
Low-carb works for some people, largely because it can make a calorie deficit easier to maintain — not because carbs are uniquely fattening. The best approach is the balanced split you can stick to. There is no one right answer, and a registered dietitian can help you personalize it.

Build a protein-forward week

RecipeOK helps you pick higher-protein recipes that fit your calorie goal and totals your macros across the week.

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Keep reading

How many calories should I eat? →How to track macros →High-protein foods →Calorie & macro calculator →