What Should My Macros Be for Fat Loss?

A commonly cited general range for fat loss is roughly 1.6–2.4 grams of protein per kilogram of bodyweight — often toward the higher end of that range during a deficit — with fat and carbs split based on personal preference and training needs, alongside a moderate calorie deficit. This is a general starting range, not a personalized prescription.

Trackbie does not provide medical advice. This is general information, not a personalized recommendation — consult a healthcare professional or registered dietitian before making significant changes to your diet.

Why Protein Goes Up During a Deficit

Eating in a calorie deficit risks losing muscle along with fat, especially if protein intake is too low. Pushing protein toward the higher end of the general range helps preserve muscle mass while you’re losing weight, which is why fat-loss macro advice usually treats protein as the non-negotiable number and leaves fat and carbs more flexible.

Fat and Carbs: More Flexible Than You’d Think

Once protein is set, there’s less evidence that a specific fat-to-carb ratio matters for fat loss itself — total calories and protein intake tend to matter more than exactly how the remaining calories are split. Choose a fat/carb balance that’s sustainable for you rather than chasing a specific ratio.

The Deficit Still Has to Be Realistic

Macro ratios matter less than whether the underlying calorie deficit is one you can actually sustain. A ratio that looks ideal on paper is worthless if the total calorie target is too aggressive to stick with for more than a couple of weeks.

Starting From Your Real Pattern

Rather than guessing at a deficit from a generic formula, a target grounded in your actual eating gives you a more realistic starting point. Plan My Day builds your macro target from your last 7 days of real eating, then adjusts as your habits change — closer to how a coach would set a target than a one-size-fits-all calculator.