See your Flesch Reading Ease score and grade level so you can write clearer, more readable content.
Paste at least a sentence to score readability.
Why
Readers, and search engines, prefer content that is easy to understand. If your sentences are long and your words are complex, people bounce, skim, or give up before they reach your point. A readability checker scores how easy your writing is to read so you can simplify where it counts, turning a vague feeling that something is hard to follow into a concrete number you can improve. That feedback loop is what separates writing that merely sounds smart from writing that actually communicates. Most writers are too close to their own work to judge its difficulty, because they already know what they meant and fill in the gaps automatically. A readability score steps outside that bias and estimates how the text will land for someone reading it cold, which is exactly the perspective that matters. Treating clarity as something you can measure, rather than something you hope you achieved, makes editing far more deliberate and far less a matter of luck.
The most widely used measure is the Flesch Reading Ease score, which runs from 0 to 100, where higher numbers mean easier reading. It is calculated from two simple signals: the average number of words per sentence and the average number of syllables per word. Shorter sentences and shorter words push the score up, while long sentences packed with multi-syllable words pull it down. A score of 60 to 70 is considered plain English suitable for most adult readers, 70 to 90 is easy and conversational, and anything below 50 is fairly difficult and usually reads like academic or technical prose. The elegance of the formula is that it relies only on structural signals it can count, not on judging meaning, so it is fast, objective, and repeatable. That also explains its blind spots: it cannot tell whether your argument is logical or your word choices are apt, only whether your sentences and words are long. Used with that understanding, the reading ease number is a reliable proxy for surface difficulty and a great first thing to check when something feels hard to read.
Alongside reading ease, this tool reports an estimated US grade level, which tells you roughly how many years of schooling a reader needs to follow the text comfortably. A grade level of 7 to 8 is a sensible target for general web content, news, and marketing copy, because it is accessible without feeling dumbed down. Specialist or legal writing naturally lands higher, while content aimed at a broad public audience, such as health information or government services, often aims for grade 6 or below to make sure nearly everyone can understand it. The grade level is often easier to act on than the raw ease score because it maps onto an intuitive idea of schooling, so telling a team to aim for around eighth-grade reading is clearer than asking them to hit a reading ease of sixty-five. It is worth remembering that writing at a lower grade level does not mean writing for children; it means respecting your readers time and removing unnecessary effort, which even highly educated audiences appreciate when they are skimming on a phone or short on time.
Knowing your audience is the key to using these scores well, because there is no single correct number. A scientific paper, a childrens story, and a landing page should not read at the same level, and forcing them all toward one score would be a mistake. The right approach is to set a target appropriate to who you are writing for, then use the checker to confirm you are hitting it. If your reading ease is far below your target, the stats on words per sentence quickly show whether long sentences or heavy vocabulary are the culprit. This is why the tool reports average words per sentence alongside the score, since that single number usually points straight to the fix. If your words per sentence is high, splitting a few sprawling sentences will lift the score quickly, whereas if the sentences are already short the difficulty is coming from vocabulary and you should look at simplifying terms instead. Diagnosing the cause before editing means you spend your effort where it will actually move the result.
Readability also has real business value beyond pure clarity. Pages that are easy to read tend to hold attention longer, which improves dwell time and reduces bounce rate, signals that correlate with better search performance. Clear product descriptions convert more shoppers, simple help articles cut support tickets, and readable emails get acted on more often. Because the checker shows you exactly where text is dense, it becomes a practical lever for improving the metrics that matter, not just an abstract writing exercise. Clarity also reduces friction in less obvious places: instructions that are easy to follow generate fewer mistakes, forms with readable labels get completed more often, and policies written in plain language are more likely to be understood and obeyed. In every one of these cases the readability score is an early-warning signal that something will cost you later if you ship it as is. Catching dense passages before they reach customers is far cheaper than dealing with the confusion they cause afterward.
Improving a poor score is usually straightforward once you can see it. Break long sentences into two, replace jargon and multi-syllable words with everyday alternatives, cut filler phrases, and prefer the active voice. Each of these moves nudges words per sentence and syllables per word downward, and you can watch the reading ease climb as you edit. Because everything is calculated instantly in your browser, you get immediate feedback on every change, which makes editing for clarity faster and far less guesswork than reading a draft aloud and hoping it sounds simpler. The instant recalculation also makes the tool a quiet teacher: as you watch the score respond to each edit, you start to internalize which habits help and which hurt, and before long you write clearer first drafts without thinking about it. That is the real payoff of measuring readability, not chasing a particular number on one article, but gradually training yourself to communicate more clearly in everything you write.
This tool combines the Flesch Reading Ease formula with an estimated grade level and sentence-length statistics, giving you several angles on the same text at once. The reading ease number is the quick headline, the grade level translates it into schooling years, and the average words per sentence pinpoints where complexity is creeping in. Everything is calculated locally in your browser as soon as you paste, so you can experiment with edits and see the scores respond in real time without anything being uploaded.
How
Add a paragraph or a full article into the box. For a reliable score, give the tool at least a few sentences, since very short snippets do not contain enough data to measure accurately.
See your Flesch Reading Ease score, difficulty label, estimated grade level, and average words per sentence. Together these tell you how hard the text is and which factor, long sentences or complex words, is driving the difficulty.
Shorten long sentences, swap jargon for everyday words, and prefer the active voice, then watch the score update instantly. Repeat until you hit a reading ease and grade level that fit your audience.
Who
Blog posts and articles that read easily keep visitors on the page and encourage them to finish. A readability score helps writers cut dense passages and aim for a clear, engaging style that suits a general web audience.
Readable pages tend to hold attention longer and reduce bounce, signals that support better search performance. Checking reading ease before publishing helps ensure content is accessible to the widest possible audience without sacrificing depth.
Some assignments specify a target reading level or reward clear, concise writing over needlessly complex prose. A readability checker helps students confirm their essay communicates clearly rather than hiding thin ideas behind long sentences.
Interface copy, onboarding flows, and help articles need to be understood quickly by stressed or busy users. Keeping these at a low grade level reduces confusion, lowers support requests, and makes products feel easier to use.
Landing pages, ads, and emails convert better when the message is instantly clear. Checking readability ensures the value proposition lands without forcing readers to work through dense or jargon-heavy sentences.
Teachers and publishers often need material pitched at a specific grade or age group. A readability score makes it easy to verify that worksheets, textbooks, and articles match the intended reading level.
When
When you want content that's easy to read, a quick readability check is a final quality gate before it goes live. It catches dense paragraphs you stopped noticing while writing, so you ship clear content rather than a wall of text. Building this check into your publishing routine means clarity problems are caught consistently instead of slipping through whenever you are in a hurry.
When your readers vary widely in background and education, clarity matters more than sounding clever. Aiming for plain English ensures the largest possible share of your audience understands the message.
When a draft feels heavy and your sentences run long, the words-per-sentence stat confirms whether the problem is structure or vocabulary. That makes it clear exactly what to cut or split to lighten the text.
When a brief, client, or regulation specifies a target grade level, you need objective proof you have hit it. The estimated grade level lets you verify compliance instead of guessing whether the text is simple enough.
When adapting material for non-native speakers or a plain-language version, lowering the reading level is the goal. The score guides you as you shorten sentences and replace difficult words until the text is genuinely accessible. Pairing the readability check with a case converter is a natural workflow here, since localized and simplified copy often needs its headings and labels reformatted to a consistent case at the same time.
When polishing a draft from an AI assistant, the output can be wordy or overly formal. A readability check flags where to trim and simplify so the final version reads naturally for your audience. It is a fast way to catch the slightly stiff, over-formal tone that machine-generated drafts often have, turning a serviceable draft into copy that sounds like a person wrote it.
See your Flesch Reading Ease score and grade level so you can write clearer, more readable content.
Use the Readability Checker