Macro Calculator
Calculate your daily protein, carbs, and fat needs
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
How much protein do I need?
For most people who exercise regularly, 1.6 to 2.2 grams of protein per kilogram of body weight is recommended, according to the International Society of Sports Nutrition. During weight loss, aiming for the higher end (2.0 to 2.2 g/kg) helps preserve muscle mass and increases satiety. Sedentary adults need less — around 0.8 g/kg — but active individuals benefit significantly from higher intakes.
Is it important to hit my macro targets exactly?
No, perfect precision is not necessary. The most important factors are staying close to your total calorie target and hitting your protein goal reasonably well each day. Fat and carbohydrate ratios can fluctuate somewhat from day to day without significantly affecting your results, as long as weekly averages remain in the right range. Focus on consistency over perfection — it is far more sustainable.
What's the difference between macros and calories?
Calories measure the total energy in your food, while macronutrients — protein, carbohydrates, and fat — are the three nutrient categories that provide those calories. Protein and carbs each supply 4 kcal per gram, while fat provides 9 kcal per gram. Two meals with the same calorie count can have very different macro profiles, which affects satiety, muscle preservation, and energy levels. That is why tracking macros gives you more control than tracking calories alone.
How do I track my macros?
The Kalori app makes macro tracking effortless. Simply snap a photo of your food, and the AI automatically estimates calories, protein, carbohydrates, and fat. You can also search for foods by name or scan a barcode for packaged products. The app tracks your daily totals against your targets, so you always know where you stand without manual data entry.
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