Fiber Intake Calculator
Most people eat less fiber than they should. Enter your sex, age and usual daily calories, and this tool shows both fiber targets — the 14 g per 1,000 kcal method and the standard age-and-sex values — so you know your number.
How to use
- Enter your sex and age.
- Enter your usual daily calorie intake.
- Both fiber targets appear instantly.
- Compare your current eating habits with the target, and raise fiber gradually — not overnight.
Note
The 14 g per 1,000 kcal method is the basis of the published adequate intake values: men 19 to 50 about 38 g, men over 50 about 30 g, women 19 to 50 about 25 g, women over 50 about 21 g per day. Increase fiber gradually and drink enough water. Estimate only — not medical advice.
Frequently Asked Questions (FAQ)
What does the fiber intake calculator show?
Your recommended daily fiber grams based on age, sex and daily calorie intake, showing both the 14 g per 1,000 kcal method and fixed age-and-sex values.
What are typical daily fiber targets?
Men 19-50 about 38 g, men over 50 about 30 g, women 19-50 about 25 g, women over 50 about 21 g per day.
Should I reach the target on day one?
No. Raise your fiber intake gradually and drink enough water, or you may feel discomfort.
Why does it show two fiber targets?
It shows both the calorie-based method of 14 grams per 1,000 kcal and the fixed age-and-sex value, so you can compare them.