Macro Calculator

How we calculate your macros

Your macronutrient distribution is calculated based on your daily calorie intake, body weight, and specific goal, following evidence-based guidelines from sports nutrition research. Protein is set between 1.6 and 2.2 grams per kilogram of body weight, in line with recommendations from the International Society of Sports Nutrition. Higher protein intakes (2.0 to 2.2 g/kg) are assigned during weight loss to help preserve lean muscle mass, and during muscle-building phases to provide the amino acids needed for growth and repair. Fat is set to 25 to 30 percent of total calories, with a floor of 0.8 g/kg body weight. This minimum is important because dietary fat is essential for hormone production — including testosterone and estrogen — as well as absorption of fat-soluble vitamins A, D, E, and K. Dropping fat too low can disrupt hormonal balance and overall health. The remaining calories after protein and fat are allocated to carbohydrates, which serve as the body's primary fuel source during moderate-to-high-intensity exercise and support recovery between training sessions.

What your result means

Your protein target is designed to ensure you preserve existing muscle during a calorie deficit or build new muscle during a surplus. Research consistently shows that adequate protein intake is the single most important dietary factor for body composition, beyond total calories. Fat supports hormone production, brain function, cell membrane integrity, and the absorption of vitamins A, D, E, and K. Cutting fat too aggressively can lead to hormonal disruption and reduced wellbeing. Carbohydrates fuel your workouts, replenish glycogen stores, and support cognitive function throughout the day. The split provided here is a well-researched starting point, but individual needs vary. Athletes doing high-volume endurance training may benefit from more carbohydrates, while those following a lower-carb approach may shift calories toward fat. The key is hitting your protein target consistently while distributing fat and carbs in a way that supports your energy levels, training performance, and long-term adherence. Track your macros for two to four weeks and adjust based on how your body responds.

Frequently Asked Questions