1. Your daily fat target
2. Track today's fat
Enter grams of fat for each small meal or snack. The bar shows how much of your daily limit is used. Small, low-fat meals empty from the stomach more easily. Saved automatically on this device.
0 g used of 40 g 40 g left
Low-fat, low-fiber foods for gastroparesis
Approximate fat per typical serving. For gastroparesis, choose foods that are both low in fat and low in fiber, in small portions.
| Food | Serving | Fat (g) |
|---|---|---|
| Egg white | 1 | 0 |
| Skinless chicken breast | 100 g | 3.6 |
| White fish (cod) | 100 g | 0.9 |
| White rice, cooked | 1 cup | 0.4 |
| White bread | 1 slice | 1.0 |
| Potato, boiled (no skin) | 1 medium | 0.2 |
| Applesauce | 1/2 cup | 0.1 |
| Banana | 1 medium | 0.4 |
| Non-fat yogurt | 150 g | 0.4 |
| Low-fat smoothie | 1 cup | 2.0 |
| Egg (whole) | 1 large | 5 |
| Cheddar cheese | 30 g | 9 |
| Butter | 1 tbsp | 12 |
| Fried food (avg portion) | 1 serving | 20+ |
Free low-fat diet calculator for gastroparesis
This gastroparesis fat calculator answers the question a delayed-emptying diet leaves unanswered: how many grams of fat per day with gastroparesis should you aim for? A low-fat, low-fiber diet is the foundation of managing gastroparesis (delayed gastric emptying), but the advice usually arrives without a number. Enter your calories above and the tool works out your daily fat-gram target, splits it across small meals, and lets you track fat through the day.
How much fat can you eat with gastroparesis?
Fat is limited because it slows down stomach emptying — and in gastroparesis the stomach already empties too slowly. Typical guidance:
- Phase 2 (limited diet) — often around 40 grams of fat per day.
- Phase 3 (maintenance) — often up to 50 grams of fat per day.
- Each meal — kept small, roughly 5–10 grams of fat, to avoid symptom flares.
Your own limit depends on your calories and how severe your symptoms are. The calculator lets you dial the fat percentage down during flares and up as you tolerate more.
Why fat and fiber both matter
Two things slow gastric emptying: fat and fiber. That's why a gastroparesis diet is usually both low-fat and low-fiber. High-fiber foods — raw vegetables, skins, seeds, nuts, whole grains, and tough meats — can sit in the stomach and, in some cases, form hardened masses called bezoars. Soft, low-fiber, low-fat foods move through more easily.
The three-phase gastroparesis diet
Many clinics use a phased approach you can move through with your dietitian:
- Phase 1 — mostly liquids, used after a severe flare.
- Phase 2 — a limited diet of soft, low-fiber foods, often about 40 g of fat per day.
- Phase 3 — longer-term maintenance, often up to 50 g of fat per day, still low-fiber.
How this calculator works
The math is simple: there are 9 calories in every gram of fat, so your daily fat limit is your calories multiplied by your chosen fat percentage, divided by 9. For example, 1,800 calories at 20% = 1,800 × 0.20 ÷ 9 = 40 grams of fat per day. The tracker keeps a running total so you can see how much of that limit each small meal uses.
What to eat with gastroparesis
- Lean protein: skinless chicken, turkey, white fish, and eggs
- Low-fiber starches: white bread, white rice, plain pasta, skinless potato
- Soft or cooked fruits and vegetables without skins or seeds; applesauce; bananas
- Low-fat dairy and non-fat yogurt
- Liquids and blended foods: smooth soups, low-fat smoothies, nutrition drinks
Foods to avoid with gastroparesis
- Fried and greasy foods, and fatty or tough meats
- Full-fat dairy, butter, cream, and cheese
- High-fiber foods: raw vegetables, skins, seeds, nuts, beans, and whole grains
- Carbonated drinks and large, heavy meals
A sample low-fat gastroparesis day (about 35 g of fat)
- Breakfast — cream of wheat with a banana and non-fat yogurt (~2 g)
- Snack — applesauce and white toast (~1 g)
- Lunch — skinless chicken, white rice, and soft-cooked carrots (~5 g)
- Snack — low-fat smoothie (~2 g)
- Dinner — baked white fish, mashed potato (no skin), and peeled squash (~7 g)
- Evening — non-fat yogurt with a little smooth fruit puree (~1 g)
Use the tracker above to build your own day of small, low-fat meals.
Tips that help food move through
Eat sitting upright and stay upright for an hour or two after meals, chew well, favor softer textures during flares, and sip fluids through the day. If solids are hard to tolerate, more of your calories can come from low-fat liquids.
Managing another digestive condition on a low-fat diet? See our related tools for pancreatitis and after gallbladder removal.
⚠️ This tool provides general educational estimates and is not medical advice. Gastroparesis varies a lot between people. Follow the specific plan from your own doctor or registered dietitian, especially if you have diabetes or are losing weight.
Frequently asked questions
How many grams of fat per day can I eat with gastroparesis?
Fat is usually limited to about 30–50 grams per day with gastroparesis — often around 40 grams per day in the limited (Phase 2) diet and up to 50 grams per day for long-term maintenance (Phase 3). Enter your calories above to get your target, then keep each small meal to roughly 5–10 grams of fat.
Why does fat make gastroparesis worse?
Fat slows down stomach emptying. In gastroparesis the stomach already empties too slowly, so a high-fat meal can make fullness, nausea, bloating, and reflux worse. Keeping fat low and meals small helps food move through more comfortably.
What foods should you avoid with gastroparesis?
Avoid fried and greasy foods, fatty meats, full-fat dairy, butter and cream, and high-fiber foods like raw vegetables, skins, seeds, nuts, whole grains, and tough meats. Both high fat and high fiber slow stomach emptying.
What can I eat with gastroparesis?
Low-fat, low-fiber, soft or blended foods are best: white bread, white rice, well-cooked skinless potato, peeled soft-cooked vegetables, lean protein, eggs, low-fat dairy, bananas, applesauce, and smooth soups. Liquids and purees often empty more easily than solids.
Do I also need a low-fiber diet for gastroparesis?
Usually yes. Fiber slows stomach emptying and can form bezoars (hardened food masses). A gastroparesis diet is typically both low-fat and low-fiber, with soft textures, especially during flares.
How many small meals should I eat with gastroparesis?
Small, frequent meals — often 5 to 6 a day — are much easier to tolerate than large meals, because each contains less fat and volume for the slow stomach to handle. The calculator can split your daily fat target across 3 to 6 meals.
Can I drink smoothies or liquids with gastroparesis?
Often yes. Liquids and blended foods empty from the stomach more easily than solids, so smooth soups, low-fat smoothies, and nutrition drinks are commonly recommended, especially during flares. Keep them low in fat and fiber.
What are the phases of the gastroparesis diet?
Many clinics use three phases: Phase 1 is mostly liquids after a severe flare; Phase 2 is a limited diet (often about 40 g of fat per day) with soft, low-fiber foods; Phase 3 is longer-term maintenance (often up to 50 g of fat per day). Move between phases with your dietitian.
Are eggs OK for gastroparesis?
Yes. Eggs are low in fiber and easy to digest, and egg whites are essentially fat-free. Prepare them without a lot of added oil or butter to keep the fat low.
How is my daily fat limit calculated?
The calculator multiplies your daily calories by your chosen fat percentage, then divides by 9 (there are 9 calories in each gram of fat). For example, 1,800 calories × 20% ÷ 9 = 40 grams of fat per day.
Do I need a low-fat diet forever with gastroparesis?
It depends on the cause and severity. Some people need the diet only during flares; others manage long-term with a low-fat, low-fiber pattern. Your doctor or dietitian can help you adjust as symptoms change.
Is this gastroparesis fat calculator free?
Yes. It is completely free, requires no sign-up, keeps your entries private on your own device, and works on any phone, tablet, or computer.