Informational estimates, not medical advice. We use standard formulas from nutrition and exercise physiology. Instant in-browser calculation, no account, no data sent. For medical decisions, consult a professional.
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iHow it is calculated
Macros are found by splitting your daily calories by percentage and converting to grams (protein and carbs 4 kcal/g, fat 9 kcal/g):
grams = (calories × percent) ÷ kcal per gram
At 2,200 kcal, a balanced 30/40/30 split: protein 660 ÷ 4 = 165 g, carbs 880 ÷ 4 = 220 g, fat 660 ÷ 9 = 73 g.
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?Frequently asked questions
What are macronutrients?
They are the three main energy sources in food: protein, carbohydrates and fat. Protein and carbs provide 4 calories per gram, while fat provides 9 calories per gram.
How are macronutrients calculated?
Start from your daily calories and split them by percentage. For example, at 2,200 kcal with 30% protein: 660 kcal ÷ 4 = 165 g of protein. Same idea for carbs and fat.
What is a balanced macronutrient split?
A common ratio is 30% protein, 40% carbs and 30% fat. It is versatile for maintenance and general health, but you can adjust it to your goals.
What split for weight loss?
Many people prefer more protein (35–40%) for satiety and muscle retention, with the rest split between carbs and fat. What matters most is the overall calorie deficit.
What does the keto diet mean for macros?
The ketogenic diet uses very few carbs (under 5–10%), moderate protein and high fat (70% or more), to push the body to use fat as its main energy source.
Where do I get the calorie number for macros?
From the TDEE calorie calculator: it gives your maintenance need and loss or gain targets. Enter that number here to split it into macros.
How many grams of fat are healthy per day?
Generally fat should be 20–35% of calories, favouring unsaturated fats (olive oil, fish, nuts). Below 20% long term can affect hormones.
Do I have to hit the exact grams every day?
Not to the gram. Consistency over the medium term matters more than daily precision. Use the numbers as a guide, not a rigid rule.
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