Content Readability Analyzer

Content Readability Analyzer

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Flesch Reading Ease
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Flesch-Kincaid Grade
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US grade level
Gunning Fog Index
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Years of education
SMOG Index
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Years of education
Coleman-Liau Index
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US grade level
Automated Readability
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US grade level
Average Grade Level
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Combined estimate

Text Statistics

Total Words--
Total Sentences--
Total Syllables--
Complex Words--
Avg Words/Sentence--
Avg Syllables/Word--

Reading Time

📖Average Reader--
Fast Reader--
🎙️Speaking Time--

Suggestions for Improvement

Long Sentences to Review

Complex Words Found

💡 Tip of the Day

Use structured data to enhance search listings.

What is Content Readability Analyzer

Content Readability Analyzer helps you check how easy your writing is to read and fix trouble spots fast. If readers stop halfway because sentences run long or words feel heavy, the message gets lost. The free Content Readability Analyzer by FlexiTools.io calculates multiple readability scores, estimates grade level, highlights long sentences and complex words, and offers clear suggestions you can act on. In the next 60 seconds, you can paste your text, click Analyze, scan a simple score overview, and use the tips to tighten your draft.

How to Use Our Content Readability Analyzer

  1. Paste or type your text
  • Use the Enter Your Text box. The live counter shows characters and words as you type. You can also click Load Sample to see how the tool works.
  1. Click Analyze Readability
  • The overview shows Flesch Reading Ease with a plain label, plus Flesch‑Kincaid Grade, Gunning Fog, SMOG, Coleman‑Liau, Automated Readability, and an average grade estimate.
  1. Review details
  • In Text Statistics, see words, sentences, syllables, complex words, average words per sentence, and average syllables per word. Reading Time shows average reader, fast reader, and speaking time.
  1. Improve and recheck
  • Use Suggestions for Improvement, Long Sentences to Review, and Complex Words Found to clean up your draft. Click Clear to start a new pass.

Why FlexiTools.io Offers the Best Content Readability Analyzer

Multi‑score view in one click

See several well‑known formulas side by side with a main Flesch Reading Ease dial and a combined grade estimate.

Actionable highlights

Spot long sentences and complex words in dedicated panels, plus short suggestions that map to your text stats.

Clear time estimates

Reading Time makes planning easy - you get average, fast, and speaking time at a glance.

Simple, private, in‑browser flow

Paste, analyze, refine - all in your browser with short, helpful status messages.

FlexiTools.io vs typical alternatives

  • FlexiTools.io: Scores, stats, and highlights in one view - Alternatives: Separate screens or missing metrics
  • FlexiTools.io: Reading time and speaking time included - Alternatives: No timing guidance
  • FlexiTools.io: Clear “Analyze, Clear, Load Sample” buttons - Alternatives: Hidden or multi‑step controls
  • FlexiTools.io: Suggestions tied to actual findings - Alternatives: Generic advice only

A Deeper Look at Readability Scores and Plain Language

What the scores mean at a glance

Readability formulas try to predict how hard a passage is to read. They usually look at sentence length and word complexity. This tool reports several common scores:

  • Flesch Reading Ease - higher is easier. A score around 60–70 suits general audiences.
  • Flesch‑Kincaid Grade - U.S. grade level estimate based on words per sentence and syllables per word.
  • Gunning Fog Index - years of education needed, with “complex words” defined as 3 syllables or more.
  • SMOG Index - focuses on polysyllabic words to estimate years of education.
  • Coleman‑Liau and Automated Readability - compute grade level from characters per word and words per sentence.
    Because each formula weighs features differently, numbers may not match exactly. That’s normal. Look for the overall pattern and the average grade level to guide edits.

Why sentences and syllables matter

Long sentences stack clauses and force readers to hold more ideas in working memory. Shorter sentences help readers track each point. Complex words add friction, especially when stacked back to back. A few rare words are fine when they carry needed meaning. But many long words in one line often signal a simpler phrase could work better.

The tool reports:

  • Avg Words per Sentence - useful for spotting rambling lines.
  • Avg Syllables per Word - a quick gauge of word complexity.
  • Complex Words - often 3+ syllables, excluding obvious proper nouns.
    If these trend high, your Flesch score typically drops and grade levels rise. Trim clauses, split big sentences, and prefer plain alternatives where meaning stays the same.

Plain language beats clever phrasing

Plain language is about clarity, not dumbing down. It helps readers find what they need and act on it. A helpful reference is the federal guidance on the [PlainLanguage.gov guidelines] which explains how short sentences, everyday words, and clear structure reduce cognitive load. For accessibility, the W3C’s note on [Reading Level in WCAG] reminds us that lower reading barriers help more people, especially on public‑facing pages.

How does this play out in a rewrite?

  • Replace noun stacks with a simple verb. “Conduct an assessment of” can become “assess.”
  • Prefer verbs over passive constructions. “The report was written by” can become “We wrote the report.”
  • Break up multi‑idea sentences. One idea per sentence is a safe default.
  • Swap rare words for common synonyms when meaning stays intact.

Reading time and speaking time

Reading time helps you scope length. Average readers move around 200–250 words per minute. Fast readers may reach 300. Speaking time is slower - roughly 130–160 words per minute - since good delivery includes pauses and emphasis. Use these estimates to cut or add detail to fit a talk track, tutorial, or script.

A quick edit workflow

  • Analyze your draft to get baseline scores and stats.
  • Scan Long Sentences to Review. Split the worst offenders first.
  • Check Complex Words Found. Replace unneeded jargon and long fillers.
  • Re‑analyze. If grade level is still high, tighten intros and remove side notes that don’t support the main point.
  • Revisit Suggestions for Improvement and the time panel before you ship.

Limits and judgment

Formulas can’t read tone or check facts. They are guides, not rules. Keep terms of art where needed, and use examples to make them land. For public content, aim for clarity first. For specialized audiences, plain structure still helps - short sentences and strong verbs support everyone.

Links:

  • Plain language guidance: PlainLanguage.gov’s readable [guidelines]
  • Accessibility note on reading level: W3C’s WCAG 2.x [Reading Level]

Pro-Tips for Getting the Most Out of Readability Checks

  • Fix structure before word choice - split long sentences, then replace heavy words.
  • Read aloud once - the Speaking Time panel sets expectations and reading aloud reveals clunky spots fast.
  • Re‑run the analyzer after each round of edits - small changes often lift the main score more than you expect.
Which readability scores does the tool calculate?
You’ll see Flesch Reading Ease as the main score, plus Flesch‑Kincaid Grade, Gunning Fog Index, SMOG, Coleman‑Liau, Automated Readability, and an average grade level. Each uses different inputs, so small differences are expected. Use the trend and the average to guide edits rather than chasing a single number.
How do you estimate reading and speaking time?
The estimates combine your total word count with typical rates. Average readers are around 200–250 words per minute, fast readers closer to 300, and speaking about 130–160. These are practical ranges to plan length - always test with your audience.
What counts as a complex word here?
The tool flags words with roughly three or more syllables and aggregates a total. Proper nouns and easy compounds may still appear if they meet the syllable rule. Treat the list as a prompt - if a long word adds precision, keep it; if a shorter synonym works, use it.
Why do different scores disagree?
Formulas weigh features differently. Some use characters per word, others use syllables per word, and several look closely at sentence length. That’s why the numbers rarely match exactly. Look for direction: if most scores point to a high grade level, shorten sentences and simplify wording.
Does the tool store my text?
No. Analysis runs in your browser. Use Clear to remove the current text, or Load Sample to test the features. If you’re editing sensitive material, do your final review offline as well.