Step 1: Set cut calories, 20 percent below maintenance
A cut lives in a moderate deficit: enough to lose 0.5 to 1 percent of bodyweight per week, small enough to train hard and keep muscle. Our example: a 30-year-old man, 90 kg, 180 cm, moderately active. His maintenance (TDEE) is about 2,914 calories. Twenty percent off gives a cut target of 2,331 calories a day. That 583-calorie deficit should produce roughly half a kilo of fat loss per week.
Step 2: Push protein to the top of the range
In a deficit, your body is more inclined to burn muscle for energy, so protein goes to the top of the range: 2.2 grams per kilogram. At 90 kg, that is 198 grams of protein, which is 792 calories. Combined with hard resistance training, this is the main thing separating a cut that reveals muscle from one that just makes you smaller.
Step 3: Protect a fat minimum
Fat stays at 0.5 to 1 gram per kilogram to protect hormones and hunger signaling. For our lifter, 0.8 grams per kilogram gives 72 grams of fat, which is 648 calories. Never drop below 0.5 grams per kilogram for long: 45 grams is the floor for a 90 kg person, and going under it is where cuts start causing hormonal problems and rebound hunger.
Step 4: Carbs take the cut
Subtract protein and fat calories from the target: 2,331 minus 792 minus 648 leaves 891 calories. Divide by 4: 891 divided by 4 is 222.75, so 223 grams of carbs. His complete cutting plan is 2,331 calories: 198 grams of protein, 72 grams of fat, 223 grams of carbs. Carbs are the lever from here: when the cut needs to deepen, carbs move first.
The calculator baseline versus the cutting tweak
The free macro calculator on this site uses 2 grams of protein per kilogram as its baseline, which would give our lifter 180 grams of protein, 65 grams of fat, and 257 grams of carbs at 2,331 calories. The cutting tweak above simply raises protein to 2.2 grams per kilogram and lets carbs absorb the difference. Run the calculator, then bump protein up by about 20 grams and drop carbs by the same calories.
When fat loss stalls
Stalls are normal: water retention masks fat loss for a week or two at a time. Only adjust after two to three weeks with no trend change. When it is real, trim 100 to 200 calories from carbs (25 to 50 grams) and hold protein, fat, and training steady. One adjustment, then another two to three weeks of data. People who change everything every Monday never learn what actually works.
Mistakes that kill cuts
The three classic errors: cutting protein along with calories, which guarantees muscle loss; dropping fat below the 0.5 gram per kilogram floor, which wrecks hormones and hunger; and changing the plan weekly, which makes the data meaningless. Pick the numbers above, train hard, sleep seven-plus hours, and let the two-to-three-week trend be the judge.
This guide gives general information for meal planning. It is not medical advice. Talk to a doctor or registered dietitian before making major changes to your diet.