Frequently Asked Questions
Quick answers about protein, carbs, fat, and how gram targets are derived.
How much protein do I need per day? +
For general fitness, about 0.7–1 g of protein per pound of bodyweight (1.5–2.2 g/kg) is a widely used range. If your goal is muscle gain, the upper end of ~1–1.2 g/lb helps support recovery and lean mass. For fat loss, slightly higher protein (~0.8–1 g/lb) in a calorie deficit helps preserve lean mass.
What macro split is best for weight loss? +
There is no single best macro split for weight loss — the calorie deficit is what drives fat loss. A moderate deficit (~500 kcal/day) with a high-protein split (e.g. 40% protein, 35% carbs, 25% fat) is a practical choice because higher protein supports satiety and preserves lean mass while cutting. Keto and low-fat splits can also work as long as overall calories are below maintenance.
What is the keto macro ratio? +
A standard ketogenic macro split is about 25% protein, 5% carbs, and 70% fat of total calories. This keeps carbohydrates low enough (often under ~20–50 g/day) to sustain ketosis, with fat supplying most of the energy and protein kept moderate to protect lean mass.
How are macro grams calculated? +
First estimate your daily calorie target (BMR via the Mifflin–St Jeor equation, multiplied by an activity factor, then adjusted for goal). Then apply the chosen diet-style split as percentages of those calories. Protein and fat are converted at 4 and 9 kcal per gram respectively, and carbs fill the remainder at 4 kcal per gram.
Should I track macros or calories? +
Both matter but for different reasons. Calories determine whether you lose, maintain, or gain weight overall. Macros determine the make-up of that weight change — higher protein preserves lean mass in a deficit, adequate carbs support training, and fat supports hormones. Tracking both is most reliable; tracking only calories risks under-consuming protein.
Are these macro estimates medical advice? +
No. These are general estimates based on standard formulas. They are not medical or nutritional advice. Consult a registered dietitian or doctor before making significant changes to your diet, especially for medical conditions like diabetes or kidney disease.
Related tools
- Macro calculator — full protein/carb/fat targets by diet style
- Protein calculator — standalone daily protein target
- How to calculate macros — the formulas explained