Readability Checker

To use Readability Checker, Paste text in the textarea box given below and click on Test Readability Score Button.

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Check Readability

About Readability Checker

A readability checker is an online tool that scores how easy your writing is to understand, using formulas like Flesch-Kincaid, Gunning Fog, and SMOG Index. ToolsPivot's readability checker runs six scoring algorithms at once, accepts file uploads (.txt, .doc, .docx, .pdf, .rtf), and requires no sign-up or word limits, while most alternatives cap free usage or only support one formula.

The average American adult reads at a 7th- to 9th-grade level. Content written above that range loses readers fast. Bounce rates climb, time-on-page drops, and your message never lands. Before you publish a blog post, email campaign, or product page, running your text through a readability test takes 10 seconds and can reshape how your audience responds to every sentence.

How ToolsPivot's Readability Checker Works

Paste or upload your text: Copy your content into the input field, or upload a .txt, .doc, .docx, .pdf, or .rtf file directly. There's no character cap.
Click "Check Readability Score": ToolsPivot processes your text through six readability formulas simultaneously.
Review your scores: The Readability tab displays your Flesch Reading Ease, Flesch-Kincaid Grade Level, Gunning Fog Index, SMOG Index, Coleman-Liau Index, and Automated Readability Index alongside word count, character count, and sentence statistics.
Check keyword density: Switch to the Keyword Density tab to see your most-used 1-word, 2-word, and 3-word phrases, helping you spot repetition or keyword stuffing.
Edit and retest: Adjust your text based on the scores, then paste the revised version to confirm improvements. Repeat until you hit your target grade level.

ToolsPivot's Readability Checker Features

Flesch Reading Ease score: Rates your text on a 0-100 scale. Scores above 60 mean most adults can read it comfortably. Scores below 30 suggest college-level difficulty.
Flesch-Kincaid Grade Level: Converts text complexity into a U.S. school grade. A score of 8.0 means an eighth-grader should understand your content on the first read.
Gunning Fog Index: Measures years of formal education needed by weighting words with three or more syllables. Useful for catching vocabulary that's more complex than necessary.
SMOG Index: Estimates grade level based on polysyllabic word frequency. Preferred in healthcare communication because it's accurate for shorter texts like patient instructions.
Coleman-Liau Index: Analyzes character counts rather than syllables, making it a solid backup measurement when syllable-based formulas give inconsistent results.
Automated Readability Index (ARI): Uses characters per word and words per sentence to approximate grade level. Originally designed for the U.S. Air Force to assess technical manual readability.
Text statistics panel: Shows total word count, character count, and sentence metrics. Pair this with the word counter tool if you need deeper word-level analytics.
Keyword density analysis: Breaks down your most-used single words, two-word phrases, and three-word phrases with frequency percentages. This overlaps with what a keyword density checker does, but here it's bundled right into the readability report. Use the results alongside an AI keyword cluster tool to plan content around related phrases.
File upload support: Accepts .txt, .doc, .docx, .pdf, and .rtf files. Most free readability tools only support paste. This is a genuine time-saver if you're working with long documents.

Making Sense of Your Scores

Six different scores can feel overwhelming at first glance. Each formula measures something slightly different, so it's normal for them to disagree by a grade level or two. The trick is knowing which score matters most for your situation.

For general web content (blogs, landing pages, product descriptions), focus on the Flesch Reading Ease score. Aim for 60-70. That range hits the sweet spot where your writing feels clear without sounding dumbed down. If you're writing patient education materials or health content, lean on the SMOG Index instead, since the American Medical Association recommends a 6th-grade reading level for patient-facing documents.

Content Type	Flesch Reading Ease Target	Grade Level Target
Blog posts and web copy	60-70	7-8
Marketing emails	65-75	6-7
Technical documentation	40-50	10-12
Healthcare materials	70-80	5-6
Academic papers	30-40	13+
Social media copy	70-80	5-6

Don't chase a perfect score. A blog post that scores 62 on Flesch Reading Ease is doing fine. If your Gunning Fog is at 14 (college level) but your Flesch-Kincaid Grade is at 9, that likely means you have a few long, complex sentences dragging the Fog score up. Shorten those sentences, and both numbers will drop.

Why Use ToolsPivot's Readability Checker

Six formulas in one test: Hemingway only shows a grade level. Grammarly buries its readability score inside a paid plan. ToolsPivot runs Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI, and Flesch Reading Ease all at once, for free.
No registration, no limits: Paste 200 words or 20,000 words. Upload a 50-page PDF. There's no account wall, no daily cap, and no premium tier locking features away.
Built-in keyword density: You don't need to run a separate tool. After checking readability, flip to the Keyword Density tab and see whether you've overused certain phrases. That's one less step in your SEO audit workflow.
File upload support: Working with a Word document or PDF? Upload it directly instead of copy-pasting. This matters when you're reviewing contracts, academic papers, or documentation with formatting that breaks during paste.
Faster editing cycles: Check your first draft, note which formulas flag it as difficult, revise, and retest. The whole loop takes under a minute. Run your revised text through the grammar checker afterward to catch errors introduced during rewrites.
Works on any device: The tool runs entirely in your browser. No desktop app to install, no extension to configure. Open it on your phone during a commute and paste notes from your clipboard.
Privacy-conscious processing: Your text isn't stored on ToolsPivot's servers. For anyone working with confidential content (legal drafts, medical records, internal memos), that's a real concern most free tools don't address.

Practical Ways People Use This Tool

A freelance content writer finishes a 2,500-word blog post for a client's WordPress site. She pastes the draft into the checker and sees a Flesch-Kincaid Grade of 11.3. Too high for a consumer audience. She shortens three run-on paragraphs, swaps "approximately" for "about" and "utilize" for "use," then retests at 8.1. She also runs the text through the plagiarism checker before submitting.

An e-commerce manager at a Shopify store is rewriting product descriptions. Average session duration on product pages has dropped, and the team suspects the copy is too dense. He tests 15 descriptions and finds most score above grade 12. After simplifying the language and adding bullet points, the Flesch Reading Ease jumps from 42 to 67 across the board.

A university instructor building a Canvas course needs supplementary reading at a 6th-grade level for ESL students. She uploads a .docx file of her draft handout, finds it scores at grade 10 on the SMOG Index, and systematically replaces multi-syllable words. After three rounds of edits, the SMOG Index drops to 5.8. She then uses the text-to-speech converter to generate an audio version of the simplified handout.

An SEO agency runs readability checks as part of their content audit. For every client article, they record the Flesch-Kincaid Grade and Gunning Fog alongside metrics from the page speed checker and meta description generator. Over six months, they find that articles scoring below grade 9 earn 40% more organic clicks on average.

Tips for Improving a Low Score

Start with sentence length. It's the single biggest factor in every readability formula. If your average sentence runs 25+ words, try splitting compound sentences in half. You'll see an immediate drop in grade level.

Swap complex words for plain ones. "Demonstrate" becomes "show." "Subsequent" becomes "next." "Commence" becomes "start." These one-word swaps lower syllable counts without changing meaning. If you need help rewording paragraphs, the paraphrasing tool can generate simpler alternatives.

Cut filler. Words like "basically," "actually," and "in order to" pad your sentence length without adding information. Remove them, and readability improves by default. The article rewriter can also help tighten wordy sections.

Watch for passive voice. "The report was reviewed by the manager" has more words and more complexity than "The manager reviewed the report." Active voice keeps sentences shorter and clearer.

Break up walls of text. Short paragraphs (two to four sentences) are easier to scan, especially on mobile. And headings act as rest stops for readers, giving their eyes a place to reset before the next block of information.

Common Questions About Readability Testing

Is ToolsPivot's readability checker free?

Yes, 100% free with no registration required. There are no word limits, no daily usage caps, and no features locked behind a paywall. You get full access to all six readability formulas and the keyword density report every time you use it.

What readability score should I aim for?

For most web content, target a Flesch Reading Ease score between 60 and 70, which translates to roughly a 7th- to 8th-grade reading level. That range keeps your writing accessible to about 80% of American adults without oversimplifying your message.

How does this compare to the Hemingway Editor?

Hemingway focuses on highlighting hard-to-read sentences with color coding and assigns a single grade level. ToolsPivot runs six different formulas (Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI, and Flesch Reading Ease) and includes keyword density analysis. Hemingway is better for sentence-level editing; ToolsPivot gives you a broader scoring picture.

Can I check readability by uploading a file?

Yes. ToolsPivot accepts .txt, .doc, .docx, .pdf, and .rtf files. Upload your document directly instead of copy-pasting, which preserves formatting and saves time on longer texts like reports or ebook chapters.

Does readability affect SEO rankings?

Google doesn't use readability scores as a direct ranking factor. But readability shapes user behavior metrics that Google does care about: time on page, bounce rate, and scroll depth. Content that readers can actually finish tends to earn more backlinks, social shares, and return visits. Check your target keywords alongside readability for the best results.

Why do my six scores show different grade levels?

Each formula weighs different factors. Gunning Fog penalizes complex vocabulary more heavily, while Flesch-Kincaid focuses on sentence length and syllable counts. Coleman-Liau skips syllables entirely and looks at character counts. A one- to two-grade spread between formulas is normal. Focus on the formula most relevant to your audience.

What's a good Gunning Fog score?

A Gunning Fog score between 7 and 12 works for most audiences. Scores below 8 suit general consumer content. Scores between 10 and 12 fit professional or B2B audiences. Anything above 14 signals college-level complexity that most web readers won't push through.

Can I check readability for non-English text?

The readability formulas built into this tool (Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI) were designed for English text. Using them on other languages will produce inaccurate results because syllable counts, sentence structures, and word lengths differ across languages.

How long does the analysis take?

Results appear within two to three seconds for most texts. Even documents with 10,000+ words process quickly because the analysis runs locally in your browser. There's no queue, no wait time, and no server-side delay.

Should I test readability before or after editing for grammar?

Check readability after your second draft but before final proofreading. Fixing grammar sometimes adds words ("could of" becomes "could have"), and readability rewrites sometimes introduce new errors. Run the readability check first, revise, then pass the final version through a grammar checker or the text case converter for formatting cleanup as your last step.

What's the difference between Flesch Reading Ease and Flesch-Kincaid Grade Level?

Both formulas use the same inputs (sentence length and syllable count) but produce different outputs. Flesch Reading Ease gives you a 0-100 score where higher means easier. Flesch-Kincaid Grade Level gives you a U.S. school grade where lower means easier. They're two views of the same data.

Does this tool highlight hard-to-read sentences?

ToolsPivot's readability checker provides overall scores and text statistics rather than sentence-level highlighting. If you need sentence-by-sentence feedback, pair it with the Hemingway Editor for highlighting and use ToolsPivot for the detailed multi-formula scoring that Hemingway doesn't offer.