Fibermax · fiber intake estimator
How much fiber should you eat per day?
In the U.S., Adequate Intake for fiber is often summarized as about 14g per 1,000 calories. Everyday reference totals are commonly shown as ~25g/day for women 19–50, ~38g for men 19–50, and lower after age 50.
Those figures are population references, not a personal medical prescription. Fibermaxxing on this site means Standard × 1.5 (capped at 50g) as an optional stretch — increase gradually and drink water.
- Women 19–50: ~25g/day (Commonly cited Adequate Intake)
- Men 19–50: ~38g/day (Commonly cited Adequate Intake)
- Women 51+: ~21g/day (Commonly cited Adequate Intake)
- Men 51+: ~30g/day (Commonly cited Adequate Intake)
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FAQ
What is the recommended fiber intake per day?
Commonly cited U.S. Adequate Intake examples: women 19–50 ≈ 25g; men 19–50 ≈ 38g; women 51+ ≈ 21g; men 51+ ≈ 30g. Individual needs vary with calories and health status.
What does Fibermaxxing mean here?
Standard daily target × 1.5, capped at 50g. Not medical advice and not an official guideline.
How do I know how much I ate?
Paste your meals into the calculator for a USDA-based estimate, then edit portions if a match looks wrong.