Calculadora de Fibras
- Created by
- Renato Passos, Eng. de Software
- Reviewed by
- Renato Passos, Eng. de Software
Last updated: Apr 18, 2026
Formula
fibras (g) = (kcal / 1000) × 14
About this calculator
The Fiber Calculator estimates the ideal daily intake of dietary fiber based on your total calorie consumption. It uses the recommendation of 14 grams of fiber per 1,000 kcal, as advised by health organizations. To use it, simply enter your daily calorie intake. The result shows your fiber goal in grams, helping you plan a balanced diet.
This tool is useful for improving digestive health, managing weight, or reducing the risk of chronic diseases like type 2 diabetes and cardiovascular disease. Fiber promotes satiety, regular bowel movements, and helps control blood sugar and cholesterol levels. For example, someone consuming 2,000 kcal per day needs about 28 g of fiber. Good sources include fruits, vegetables, legumes, and whole grains.
Important: the calculator provides a general estimate. Individual needs may vary based on age, sex, activity level, and health conditions. Consult a nutritionist for personalized advice. Increase fiber intake gradually and drink plenty of water to avoid digestive discomfort. This tool does not replace professional guidance.
The formula is simple: fiber (g) = (kcal / 1000) × 14. For 1,800 kcal: (1800/1000) × 14 = 25.2 g. The calorie value entered should be your total daily intake. If you don't know your calories, use a BMR calculator or consult a professional. The Fiber Calculator is a practical starting point for healthier eating.
Frequently asked questions
How do I know how many calories I consume per day?
You can use a Basal Metabolic Rate (BMR) calculator to estimate your caloric needs, or consult a nutritionist for a more accurate assessment.
Can I eat more fiber than recommended?
Yes, but increase gradually and drink plenty of water. Sudden excess can cause gas, bloating, or constipation. Ideally, do not exceed 70 g per day without guidance.
Is the calculator suitable for children?
The 14 g/1000 kcal recommendation is for adults. Children have specific needs; consult a pediatrician or child nutritionist.
What foods are high in fiber?
Fruits (like apple and pear with skin), vegetables (broccoli, carrot), legumes (beans, lentils), whole grains (oats, quinoa), and seeds (chia, flaxseed).
Should I worry about soluble vs. insoluble fiber?
Yes. Soluble fiber (oats, fruits) helps with cholesterol and blood sugar; insoluble fiber (whole grains) improves bowel movements. A varied diet provides both types.