How to Improve Your Readability Score: A Practical Guide
You wrote something. You reread it. It sounds fine to you. Then a colleague tells you it’s hard to follow, or you notice your bounce rate is high on a page you were proud of. The problem often isn’t your ideas — it’s your sentence structure.
Readability scores give you an objective signal. They don’t replace editorial judgement, but they tell you when your text is working harder than it needs to.
What Is a Readability Score?
A readability score is a numeric estimate of how easy a piece of text is to read. Most formulas combine two variables: sentence length and word complexity (usually measured by syllable count or word length). The output maps to an approximate reading level or grade.
The most widely used formula is the Flesch Reading Ease score, developed by Rudolf Flesch in 1948. Higher scores mean easier reading. A score of 60–70 is considered “standard” — readable by most adults. Below 30 is very difficult; above 70 is easy.
A related formula, Flesch-Kincaid Grade Level, expresses the same data as a US school grade. A score of 8.0 means the text is suitable for an 8th grader. Most general-audience web content targets grade 6–9.
Why Does Readability Matter Online?
On the web, readers scan before they read. Long sentences and dense vocabulary create friction. The reader’s eye skips ahead, loses the thread, and leaves. This affects:
- Engagement: shorter, clearer sentences hold attention longer
- Comprehension: readers actually understand and retain what you wrote
- SEO: Google’s helpful content guidelines reward content that serves readers well; high bounce rates don’t help
- Accessibility: plain language makes content usable by people with cognitive disabilities, non-native speakers, and readers in a hurry
A readability score is a proxy for all of these. It won’t catch every problem, but a low score is a reliable signal that something needs work.
What Makes Text Hard to Read?
Two patterns account for most readability problems:
Long sentences. A sentence that runs past 25–30 words forces the reader to hold multiple clauses in working memory simultaneously. By the time they reach the verb, they’ve half-forgotten the subject. The fix is almost always the same: split the sentence. You rarely lose meaning; you almost always gain clarity.
Complex words. Words with three or more syllables (“approximately”, “implementation”, “utilisation”) slow reading speed. When a shorter synonym exists, use it. “About” instead of “approximately”. “Use” instead of “utilise”. “Show” instead of “demonstrate”. This isn’t dumbing down — it’s precision. The simplest word that carries the meaning is always the right word.
How to Use a Readability Score Practically
A readability score isn’t a grade — it’s a diagnostic. Here’s how to use it without becoming obsessive:
Set a target before you write. If you’re writing a legal document, a grade 12 score is appropriate. If you’re writing onboarding copy for a SaaS product, aim for grade 7–8. If you’re writing a blog post for a general audience, aim for grade 6–9 with a Flesch score above 60.
Run the score after your first draft. Don’t optimise while writing — that kills flow. Write freely, then check the score.
Fix the outliers, not everything. Most readability tools highlight the specific sentences that are dragging your score down. Fix those first. Often three or four sentence edits move the score by ten points.
Read the rewrite aloud. A sentence can pass the readability test but still sound wrong. Your ear catches rhythm problems that formulas miss. If you stumble when reading it aloud, your reader will stumble silently.
Common Rewrites That Improve Scores
| Before | After |
|---|---|
| ”It is important to note that…” | Cut it entirely |
| ”In the event that" | "If" |
| "At this point in time" | "Now" |
| "Due to the fact that" | "Because" |
| "Utilise the functionality of" | "Use” |
| Sentence with 3 clauses joined by commas | Two or three separate sentences |
Passive voice also inflates perceived complexity. “The report was written by the team” takes longer to parse than “The team wrote the report.” Not because the words are harder, but because the action is buried.
Improve Your Text Now
Our free Readability Score Improver analyses your text sentence by sentence. It highlights long sentences (🔴 over 30 words, 🟡 20–30 words), flags complex words with three or more syllables, detects passive voice constructions, and shows your current Flesch Reading Ease and Flesch-Kincaid Grade Level scores with a target gap display.
→ Open the free Readability Score Improver
Paste your draft, check the score, fix the red sentences, and publish something your readers will actually finish.