Updated Writing & SEO Tool

Content Readability Score Calculator

Paste your content and get advanced readability and clarity scores: Flesch Reading Ease, grade level, Gunning Fog, SMOG, ARI, Coleman–Liau, Dale–Chall, LIX, RIX, difficult word density, passive voice, vocabulary diversity and AI-style writing suggestions.

Multi-Formula Readability Suite Professional SEO Metrics Passive Voice & Complexity Signals AI-Style Improvement Tips

Advanced Content Readability & Clarity Analyzer

Use the tabs to paste your text, view classic readability scores, inspect advanced professional metrics and read tailored improvement suggestions. This tool is for educational and editorial use only and does not provide legal, medical or clinical advice.

For best results, paste at least 3–4 full sentences. The analysis focuses on English text.
Words: 0 · Sentences: 0 · Characters (no spaces): 0 · Estimated reading time: 0 sec

Your text is processed in your browser for this calculator. Always avoid pasting highly sensitive or confidential information into any online tool.

Content Readability Score Calculator – Professional Suite for Writers & SEO

Strong writing is not only about ideas. It is also about how easy your content is to read, follow and apply. The Content Readability Score Calculator from MyTimeCalculator gives you a professional, multi-metric view of your text so you can adjust complexity, structure and flow with confidence.

Instead of relying on a single number, this tool combines classic readability formulas, advanced clarity metrics and AI-style suggestions. It is ideal for blog posts, landing pages, knowledge-base articles, documentation and thought-leadership content.

What This Readability Calculator Measures

The tool runs several categories of analysis on your text:

  • Classic readability formulas: Flesch Reading Ease, Flesch-Kincaid grade level, Gunning Fog index, SMOG, Automated Readability Index and Coleman–Liau.
  • Professional SEO metrics: Dale–Chall style score, LIX, RIX and difficult word density.
  • Clarity signals: Average sentence length, long sentence ratio, approximate passive-voice signals and sentence complexity index.
  • Vocabulary metrics: Type–token ratio as a simple vocabulary diversity indicator and a list of longer “hard” words.
  • Reading-time estimate: Based on total word count and a typical adult reading speed.

How the Scores Are Calculated

Behind the scenes, the calculator counts words, sentences, characters and an approximate number of syllables using practical heuristics that work well for most English prose. It then applies standard formulas used in readability research and writing tools.

Because the analysis is automatic and general-purpose, results are approximate. Punctuation, abbreviations and proper nouns can affect sentence and syllable detection. For professional or legal use, treat this tool as a guide rather than a formal authority.

How to Use the Readability Scores

  • Check whether complexity matches your audience: For a broad, non-specialist audience, aim for a grade level around 6–9 and a Flesch score around 60–80.
  • Watch for very long sentences: If many sentences exceed 25–30 words, consider breaking them into shorter units.
  • Balance vocabulary: Some technical terms may be necessary, but dense clusters of long or rare words can make your content hard to scan.
  • Use passive voice carefully: A moderate amount can be fine, but heavy passive phrasing can make writing vague or indirect.
  • Compare drafts: Paste earlier and revised versions of the same content to see whether your edits improved clarity.

Limitations & Good Practices

No readability score can fully capture tone, nuance or brand voice. Some of the most effective writing intentionally bends rules—short, punchy sentences mixed with longer, reflective ones; simple words alongside occasional technical terms.

Use the scores and suggestions as a compass, not a cage. If a passage scores as “difficult” but needs to be detailed for experts, that may be the right choice. If your goal is mass-market clarity, lower complexity and more direct language may help.

Related Tools from MyTimeCalculator

Use this calculator alongside other productivity and planning tools for a complete content workflow:

Readability & Writing FAQs

Frequently Asked Questions About Readability Scores

Short answers to common questions about using readability scores to improve your content.

Not always. Higher readability usually means easier to read, but the right level depends on your audience and topic. A beginner’s guide should be very easy to read; a technical reference may reasonably be more complex. The goal is “as simple as possible, but no simpler.”

Each formula uses slightly different inputs and weights. Some focus more on sentence length, others on syllables or character counts. Instead of chasing a single exact number, look for a range and overall pattern across multiple formulas.

Many style guides suggest an average of 15–20 words per sentence for general audiences, with some shorter and some longer. Occasional longer sentences are fine, but a whole paragraph of 35–40-word sentences can feel heavy to read online.

Yes. Readability scores can help you see whether your text is getting easier to understand as you edit. The suggestions can also highlight where shorter sentences or simpler vocabulary might make your writing feel more natural to a global audience.