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Flesch-Kincaid Readability Score — Reading Ease + Grade Level

Free Flesch-Kincaid readability checker. Paste text — see reading-ease score (0–100), grade level, sentence count, syllable count. Aim for 8th-grade for general audiences.

Flesch-Kincaid Readability Score

Reading ease (0–100)

90.9

Grade level

3.1

Band

5th grade — very easy

Sentences: 2Words: 20Syllables: 25

Aim for an 8th-grade level or lower for general audiences. Higher than 12 means most readers will bounce.

About this tool

The two Flesch metrics

  • Reading ease (0–100, higher is easier): >80 = easy, 60–70 = plain, <30 = academic.
  • Grade level: roughly the US school grade required to understand the text. 8th-grade is the sweet spot for general-audience web content.

How to use the Flesch-Kincaid Readability Checker

Takes about a minute. No signup, no download, your data stays in your browser.

  1. 1
    Open the tool. Scroll up to the Flesch-Kincaid Readability Checker above — it loads instantly in your browser, no install needed.
  2. 2
    Enter your values. The fields come pre-filled with realistic defaults so you can see how it works — replace them with your own numbers.
  3. 3
    Read the result. The output updates instantly. Copy or share it — nothing is uploaded to a server, everything stays on your device.

Frequently asked questions

Common questions about the Flesch-Kincaid Readability Checker.

Is the Flesch-Kincaid Readability Checker free to use?

Yes. The Flesch-Kincaid Readability Checkeron 7BusyBoss is completely free — no signup, no paywall, no usage cap.

Do I need to sign up to use the Flesch-Kincaid Readability Checker?

No. The Flesch-Kincaid Readability Checkerworks instantly in your browser — no account needed. Signing in with Google is optional and only unlocks features like saving favorites and higher AI build limits.

Does the Flesch-Kincaid Readability Checker work on mobile?

Yes. Every tool on 7BusyBoss is mobile-responsive and works in any modern browser — Chrome, Safari, Firefox, Edge — on phones, tablets and desktops.

Is my data safe when I use the Flesch-Kincaid Readability Checker?

Yes. The Flesch-Kincaid Readability Checkerruns entirely in your browser — your inputs never leave your device unless the tool explicitly fetches public data (e.g. currency rates). We don't store the values you type.

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