Fiber Intake Calculator
Calculate your recommended daily fiber intake based on age and gender. Free online fiber calculator with high-fiber food suggestions.
Embed this toolDaily Fiber Target
grams per day
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High-Fiber Foods
Incorporate these fiber-rich foods into your diet to help meet your daily target. Fiber is found naturally in plant-based foods and is essential for digestive health.
Lentils / Black Beans
1 cup — 15g fiber
Raspberries / Blackberries
1 cup — 8g fiber
Avocado
1 medium — 10g fiber
Broccoli
1 cup — 5g fiber
Oats (rolled)
1 serving — 4g fiber
Chia seeds
2 tbsp — 10g fiber
Soluble vs Insoluble Fiber
Soluble Fiber
Dissolves in water to form a gel-like substance. It helps lower blood cholesterol and glucose levels, making it beneficial for heart health and blood sugar control.
- Oats and oat bran
- Beans, lentils, and peas
- Apples, citrus fruits, and berries
- Psyllium husk
Insoluble Fiber
Does not dissolve in water and adds bulk to stool. It promotes the movement of material through the digestive system, helping prevent constipation and maintain bowel health.
- Whole wheat flour and wheat bran
- Nuts and seeds
- Cauliflower, potatoes (with skin)
- Brown rice and quinoa
Fiber and Digestive Health
Dietary fiber is a type of carbohydrate that the body cannot digest. Unlike other carbs, fiber passes through the stomach, small intestine, and colon relatively intact. There are two main types — soluble and insoluble — and both play critical roles in maintaining gut health, regulating blood sugar, and supporting cardiovascular wellness. The average adult consumes only about 15 grams of fiber daily, well below the recommended amount. Gradually increasing fiber intake while drinking adequate water can improve digestion, enhance satiety, and contribute to long-term metabolic health.