Setting Macros for Fat Loss: A Worked 1,800-Calorie Example

Priority 1: Protein

Protein protects lean mass in a deficit, is the most filling macro, and has the highest thermic effect. A target of 1.6 to 2.2 grams per kilogram of body weight suits most lifters in a deficit. For 75 kg, choose 1.8 g/kg: 135 grams per day, which provides 540 calories (4 per gram).

If you carry a lot of excess body fat, you can calculate protein from goal body weight or lean mass instead, to avoid unnecessarily high targets.

Priority 2: Fat

Dietary fat supports hormones, absorbs fat-soluble vitamins, and improves meal satisfaction. A common floor is 20% of calories or about 0.5 g/kg. Setting fat at 25% of 1,800 calories gives 450 calories, or 50 grams (9 calories per gram).

Going lower than about 20% for long periods can affect hormone levels and well-being in some people. Going higher is fine if you prefer fatty foods, as long as carbohydrates do not fall too low for your training.

Priority 3: Carbohydrate Fills the Rest

After protein (540) and fat (450), 810 calories remain: 810 ÷ 4 = about 202 grams of carbohydrate. This is a moderate intake that supports resistance training and daily activity. Carbohydrate is the most flexible macro, so if you feel flat in workouts, shift 20 to 30 grams from fat to carbs, and if you are hungry, favor high-fiber carbohydrate sources.

The plan: 135 g protein, 50 g fat, 202 g carbohydrate, totalling 540 + 450 + 810 = 1,800 calories.

Turning Numbers Into Meals

Divide the day into three meals and one or two snacks, aiming for 30 to 40 grams of protein at each meal. A sample day: oats with Greek yogurt and berries for breakfast (about 35 g protein), chicken, rice, and vegetables for lunch (45 g), a protein shake and fruit as a snack (25 g), and salmon with potatoes and salad for dinner (40 g). Olive oil, nuts, and eggs supply the fat.

Prioritize whole foods that are high in volume and fiber, such as vegetables, fruit, potatoes, beans, and lean proteins. They keep you full on fewer calories.

Adjusting Over Time

Hit protein every day, and treat fat and carbohydrate as a flexible budget: if one rises, the other falls. Review progress every two weeks. If weight loss stalls for three weeks, reduce 100 to 150 calories, usually from carbohydrate or fat. If energy, sleep, or performance suffer, consider a diet break at maintenance for a week.

Tracking precision matters less than consistency. Weighing food for the first few weeks teaches portion sizes, after which estimates are often good enough.

Who Should Be Careful

People with kidney disease, diabetes, a history of disordered eating, or pregnancy should work with a clinician or registered dietitian before setting calorie and macro targets. Numbers on a calculator cannot account for medical conditions.