Daily Fiber Intake Calculator

Dietary fiber is essential for digestive health and disease prevention.

What this calculator does

Adult men: 30–38g/day. Adult women: 21–25g/day (Institute of Medicine).

How it works

Most people only consume 15g/day — half the recommended amount.

Frequently asked questions

How much fiber should I eat per day?

Adults: 25–38g per day depending on age and gender.