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Nutrition

How to count macros, step by step

How macro targets are set, how calories turn into grams, and how a starting split compares with the national ranges.

EVEashan VagishOctober 15, 20264 min read

Last reviewed October 15, 2026

A plate of greens topped with sliced avocado and halved boiled eggs.

To count macros, set a daily calorie target, split it into shares of protein, carbohydrate and fat, then turn each share into grams. US food labeling rules use general factors of 4 calories a gram for protein and carbohydrate and 9 for fat.[1] For adults, the national ranges are 10 to 35% of calories from protein, 45 to 65% from carbohydrate and 20 to 35% from fat.[2]

Key takeaways

  • Macros are protein, carbohydrate and fat. US food labeling rules use general factors of 4 calories a gram for protein and carbohydrate and 9 for fat.[1]
  • For adults, the national ranges are 10 to 35% of calories from protein, 45 to 65% from carbohydrate and 20 to 35% from fat.[2]
  • Dalia's plan uses a starting split of 30% protein, 40% carbs and 30% fat, which puts carbs just under the 45% low end.
  • Counting starts with a calorie target, and any estimate of daily burn is a first guess to check against your weight over time.[3]

What macros are

Macronutrients (macros)
Protein, carbohydrate and fat, the nutrients a food label lists in grams.[1] US food labeling rules count them at a general 4, 4 and 9 calories a gram.[1]

The National Academies sets an acceptable range for each one as a share of calories. These are the Acceptable Macronutrient Distribution Ranges (AMDRs).[2] For adults, protein is 10 to 35%, carbohydrate 45 to 65% and fat 20 to 35%.[2]

Step 1: set a calorie target

Macro targets are shares of a calorie number, so the calorie number comes first. A common method estimates your daily burn (TDEE) from your size, age and activity, then subtracts a deficit to lose weight or adds a surplus to gain. What TDEE is walks through that estimate.

Any estimate of daily burn is a first guess. The National Academies plans intake in two steps: estimate it, then watch body weight over time and adjust.[3]

Step 2: split the calories

Dalia's plan uses a starting split of 30% protein, 40% carbs and 30% fat. The protein and fat shares sit inside the national ranges. The 40% carb share is a little under the 45% low end.[2] Moving 5% from protein to carbs would put all three inside the ranges.[2]

MacroDalia's starting splitAdult range (AMDR)
Protein30%10 to 35%[2]
Carbohydrate40%45 to 65%[2]
Fat30%20 to 35%[2]
A starting split next to the adult ranges

Step 3: turn shares into grams

Multiply your calories by each share, then divide by that macro's calories per gram: 4 for protein and carbohydrate, 9 for fat.[1] Round to the gram.

Worked example

Macros for one person

Take a 35-year-old woman who is 5 ft 5 in (165.1 cm) tall, weighs 154 lb (69.9 kg) and is lightly active (1 to 2 workouts a week). These are the same steps, constants and rounding the Dalia app uses.

  1. Resting burn (Mifflin-St Jeor, women)

    10 × 69.85 + 6.25 × 165.1 − 5 × 35 − 161

    1,394 cal

  2. Daily burn (lightly active)

    1,394.4 × 1.375

    1,917 cal

  3. Protein, 30%

    1,917 × 0.30 ÷ 4

    144 g

  4. Carbs, 40%

    1,917 × 0.40 ÷ 4

    192 g

  5. Fat, 30%

    1,917 × 0.30 ÷ 9

    64 g

Maintenance macros

1,917 cal: 144 g protein, 192 g carbs, 64 g fat

To lose about 1 pound a week, the app takes 500 calories off first, giving 1,417 calories: 106 g protein, 142 g carbs and 47 g fat. Each gram target moves with the calorie target.

The macro calculator runs these steps with your numbers and shows the math. For the calorie side of a weight loss plan, see how many calories to eat to lose weight.

Step 4: track and adjust

Counting means logging what you eat and adding up the grams. Food labels list grams of protein, carbohydrate and fat per serving.[1] Expect your log to run low. When people record their own intake, underreporting is the most frequent error.[3]

Give a target a few weeks before changing it. If your weight is moving in the direction you want at a pace you can keep, the calorie target is working, and the split is something to adjust for how meals feel. If you want help choosing a tracker, see the calorie tracking apps we compared.

When to talk to a clinician

References & further reading

  1. 1.21 CFR 101.9: Nutrition labeling of food, U.S. Food and Drug Administration (Electronic Code of Federal Regulations)
  2. 2.Dietary Reference Intakes: Acceptable Macronutrient Distribution Ranges (summary tables), Institute of Medicine, National Academies Press, 2005
  3. 3.Dietary reference intakes for energy: summary, National Academies of Sciences, Engineering, and Medicine, 2023
  4. 4.KDOQI clinical practice guideline for nutrition in CKD: 2020 update, American Journal of Kidney Diseases (Ikizler et al.), 2020
  5. 5.Low blood glucose (hypoglycemia), NIDDK (NIH)
  6. 6.Nutrition and athletic performance: position of the Academy of Nutrition and Dietetics, Dietitians of Canada, and the American College of Sports Medicine, Journal of the Academy of Nutrition and Dietetics (Thomas et al.), 2016
  7. 7.Eating disorders, National Institute of Mental Health
EV

Eashan Vagish

Founder, Dalia Health

Eashan Vagish is the founder of Dalia Health, where he works on making heart and metabolic health easier to understand and track. He writes these guides to answer the health questions people actually ask, in plain language, with links to the research behind every claim.

About this guide: These guides are written by the Dalia Health team. Every factual claim links to its source, preferring peer-reviewed research and public-health bodies such as the NIH, CDC and WHO. Each guide shows when it was last reviewed. They are for general education and are not a substitute for medical advice. Read our editorial policy at daliahealth.com/editorial-policy, and report an error to info@daliahealth.com.

Medical disclaimer: This article is for general educational purposes only and is not medical advice. It is not a substitute for diagnosis or treatment from a qualified healthcare professional. Always talk to your doctor about your individual health, and seek immediate care for any urgent symptoms.

How we write, source and correct these guides: our editorial policy. Spot an error? Email info@daliahealth.com.

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