How Much Fiber Do You Actually Need?

Most people have no idea. Enter your age, gender, and activity level — we’ll email your personalized daily target, plus practical tips to help you hit it.

Enter your age, gender and activity level — we’ll email your personal daily fiber target.

Get started — it takes 30 seconds.

Three quick inputs to take the first step in accomplishing your daily health goals.

Daily Fiber Calculator

Free

Widget slot

WordPress calculator embeds here

📚 Based on Institute of Medicine adequate intake values.

Free guide

Hit Your Fiber Target

Know your fiber goal? Here's how to hit it.

Get our free 7-day checklist with simple, practical steps to help you work your way up to your daily fiber goal — without overhauling everything you eat.

Unsubscribe anytime.

How the calculator works

Enter your age and gender

Your fiber needs can change across different stages of life. These details help give you a more relevant starting point.

Add your activity level

How active you are can influence your nutritional needs. Tell us what a typical week looks like for you.

Get your target by email

We’ll send your personal daily fiber goal straight to your inbox, along with practical tips to help you reach it.

Why the number matters

Fiber intake is one of the most consistently under-met nutrition targets in the developed world, and the gap is bigger than most people assume.

~5%

Only about 5% of US adults meet the recommended daily fiber intake

16g

Average daily intake, against a 25–40g target

Gut Fuel

Certain fibers feed beneficial gut bacteria and help support a healthy microbiome

More Than Digestion

Fiber can support heart health, blood sugar regulation, fullness, and overall wellness

Common Questions

Is the calculator free?

Yes. The fiber calculator is completely free. Complete the form and we’ll send your personalized details straight to your inbox.

Why does getting enough fiber matter?

Fiber does much more than support regular digestion. It can play a role in gut health, fullness, blood sugar regulation, heart health, and more.

Is this medical advice?

No. The calculator is designed as a general wellness tool to help you set a daily fiber goal. Individual needs can vary, particularly if you have a health condition, are pregnant, or take medications that may be affected by fiber intake.

If you’re thinking about fiber in relation to a specific health issue, start with our condition-specific resources.

What's in the free guide?

A simple 7-day checklist designed to help you gradually add more fiber to your routine and work toward your fiber goal — with practical tips you can actually use.

What if I'm not getting enough fiber right now?

You’re far from alone. Most Americans fall short on fiber, and you don’t need to completely overhaul your diet overnight. Small changes to the foods you already eat can make it much easier to increase your intake over time.

Know your number. Then close the gap.

Start with Fiber 101 for the fundamentals, or browse our food guides to find the highest-fiber options in each aisle.

Free · About a ten minute read