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GLP-1 Calculators

Macros on GLP-1 in 2026 — Protein, Fat, and Carb Targets That Actually Work

Build a macro split that survives GLP-1 appetite suppression: protein-anchored, fat-moderate, carbs tuned to training and insulin profile.

Updated April 2026

Medical disclaimer: This tool is for informational purposes. Not medical advice. Consult your healthcare provider before starting, stopping, or changing any medication. Drug prices, savings cards, and coverage policies change frequently — verify current pricing directly with the manufacturer or your pharmacy.

Your inputs

Results

Daily calories
2,400
180g P / 80g F / 240g C
Protein
180g
Fat
80g
On GLP-1, keep protein high (0.8–1g per pound bodyweight) and fats moderate. Lower carbs help with fullness when you can only eat small meals — but don't go ultra-low-carb.

The hierarchy of nutrition levers during GLP-1 loss

  1. Total calories — still the #1 determinant of weight change.
  2. Protein — the #1 determinant of lean-mass preservation.
  3. Fiber — satiety, glucose, GI health.
  4. Fat type — inflammation, hormone production.
  5. Carb type — glucose curve, satiety.
  6. Meal timing — least important, patient-preference-driven.

Starting macro targets for common body sizes

Assuming ~20% caloric deficit from maintenance, moderate training:

  • 140-lb goal (63 kg) → ~1,400 kcal: 95 g protein / 55 g fat / 120 g carbs.
  • 160-lb goal (73 kg) → ~1,600 kcal: 110 g protein / 60 g fat / 140 g carbs.
  • 180-lb goal (82 kg) → ~1,750 kcal: 120 g protein / 70 g fat / 150 g carbs.
  • 200-lb goal (91 kg) → ~1,900 kcal: 130 g protein / 75 g fat / 170 g carbs.
  • 220-lb goal (100 kg) → ~2,100 kcal: 145 g protein / 80 g fat / 190 g carbs.

How to flex macros for different situations

  • Heavy training day: +30–50 g carbs pre/post workout.
  • Insulin-resistant or PCOS: Drop carbs 20–30 g, raise fat a bit.
  • Injection day (low appetite): Protein shake + fruit + nuts; don’t force dinner if not hungry.
  • Plateau breaking: Hold protein steady; trim 100–200 kcal from carbs or fat.
  • Maintenance: Expand calories 15–25%, keep protein grams stable.

Simple meal templates

Breakfast (~30 g protein): Greek yogurt + protein powder + berries + nuts. Or 3 egg whites + 2 whole eggs + spinach + avocado.

Lunch (~35 g protein): Large salad with 5 oz grilled protein + chickpeas + olive oil. Or lettuce wrap with turkey + hummus + vegetables.

Dinner (~30 g protein): 5 oz salmon or chicken + roasted vegetables + small portion of rice or sweet potato.

Snack (~15 g protein): Cottage cheese + fruit, protein bar, or a shake.

Related tools
Protein target
Daily g/kg by goal weight.
Diet on GLP-1
Calorie targets and food choices.
Exercise plan
Resistance + cardio plan.
Body recomposition
Fat loss + muscle preservation.
Plateau breaker
Restart loss when stuck.
Goal weight timeline
Weeks to target by drug.

Frequently asked questions

What's the right macro split for GLP-1 weight loss?

Start with protein at 1.2–1.6 g/kg goal weight, fat at 0.7–1.0 g/kg goal weight, and fill the rest of your calorie budget with carbs. For a 180-lb goal (82 kg) at a 1,700 kcal target, that's roughly 120 g protein (480 kcal), 70 g fat (630 kcal), and 150 g carbs (600 kcal). Protein is the anchor; fat and carbs flex around training and preference.

Do I need to count macros strictly?

Not necessarily. Many GLP-1 patients do well with just a protein target and a rough calorie range. Macro tracking is useful for: (1) patients who've plateaued, (2) recomposition-focused patients, (3) patients with insulin resistance who benefit from lower-carb days. If appetite suppression is controlling intake well, strict tracking often isn't needed.

Should carbs be lower for insulin resistance or PCOS?

Lower carbs help glycemic control in insulin-resistant patients. Target 100–150 g/day rather than 150–200 g/day, emphasizing fibrous vegetables, legumes, and whole grains over refined starches. Don't go ketogenic unless specifically planned — extreme low-carb plus GLP-1 plus resistance training can compromise training performance.

Is fat 'bad' on a weight-loss diet?

No. Fat is calorically dense (9 kcal/g vs 4 for protein and carbs) but essential for fat-soluble vitamins, hormone production, and satiety. GLP-1 patients often benefit from a slightly higher fat intake because fat satiates well against suppressed appetite. Emphasize monounsaturated (olive oil, avocado, nuts) and omega-3 sources (salmon, sardines, walnuts).

What about fiber?

30+ g/day. Fiber is protective against GLP-1-induced constipation, improves satiety, and stabilizes glucose. Sources: vegetables (5+ servings), legumes (0.5–1 cup daily), whole grains in moderation, fruit with skin. Psyllium husk (2 tbsp/day) is a useful supplement for patients who struggle to hit 30 g from food.

Do I need to eat every 3 hours?

No. Meal frequency doesn't affect weight loss if daily total matches. GLP-1 patients often prefer 3 meals (breakfast, lunch, dinner) plus maybe one snack. Some do well with 2 larger meals. Others graze all day. Hit your daily protein target and calorie target — the timing is secondary.

Should I eat differently on injection day vs mid-week?

Many patients find injection day (day 1 of the weekly cycle on sema/tirz) to be the lowest-appetite day. Plan a liquid protein source (shake) and easy-to-eat options. Mid-week (days 4–7 before next injection) appetite returns modestly; you have more room for larger meals.

Does a glass of wine or a cocktail matter?

Alcohol is calorically dense (7 kcal/g) and has no nutritional value. Many GLP-1 patients report reduced tolerance for alcohol — same drink hits harder. Moderate drinking (up to 1 drink/day for women, 2 for men) is fine; just count the calories if you're tracking. Heavy drinking undermines weight loss and is risky with GLP-1 GI side effects.

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