Readability Checker and Word Counter: Write Content People Actually Finish
A readability checker tells you how easy your writing is to read and understand. Our free tool combines a live word counter with two of the most widely used readability formulas, Flesch Reading Ease and the Flesch–Kincaid grade level, plus average sentence length, your longest sentence, reading time and speaking time. Type or paste your text and every number updates as you write, with specific suggestions to make long, dense passages clearer.
This guide explains what readability scores mean, what score to aim for, why readability matters for SEO, answer engines and conversions, and the practical edits that make writing easier to read without dumbing it down.
Key takeaways
- Aim for a Flesch Reading Ease of 60 or more for most web content; that’s plain English.
- Keep most sentences under 20 words and paragraphs to two to four sentences.
- Readability isn’t a direct ranking factor, but clear writing keeps readers engaged and is easier for AI to quote.
- Use scores as a guide; your audience and topic decide the right level.
What is a readability checker?
A readability checker analyses text and estimates how difficult it is to read, usually using formulas based on sentence length and word length (measured in syllables). The idea is simple: long sentences and long words make text harder to process. The resulting score helps you compare drafts, set standards for a team and spot passages that need simplifying.
What our tool measures
| Measure | What it tells you |
|---|---|
| Words, characters, sentences, paragraphs | Length and structure for briefs, limits and SEO targets |
| Reading time | Estimated at 238 words per minute, a typical silent reading speed for adults |
| Speaking time | Estimated at 150 words per minute, useful for scripts and presentations |
| Flesch Reading Ease | 0–100; higher is easier |
| Flesch–Kincaid grade | The US school grade needed to understand the text |
| Average and longest sentence | Where sentences need splitting |
| Most used words | Repetition and topic focus |
Why combine a word counter with readability
Writers often check length and clarity at the same time: a meta description needs to be short, a blog post needs enough depth, and both need to be easy to read. Having the counts and scores in one place saves switching tools.
How readability scores are calculated
Flesch Reading Ease
Developed by Rudolf Flesch in 1948, the formula scores text from 0 to 100 using average sentence length and average syllables per word:
206.835 − 1.015 × (words ÷ sentences) − 84.6 × (syllables ÷ words)| Score | Difficulty | Typical reader level |
|---|---|---|
| 90–100 | Very easy | Age 11 |
| 80–89 | Easy | Age 12 |
| 70–79 | Fairly easy | Age 13 |
| 60–69 | Plain English | Ages 13–15 |
| 50–59 | Fairly difficult | Ages 15–18 |
| 30–49 | Difficult | University |
| 0–29 | Very difficult | Graduate |
Flesch–Kincaid grade level
This variation converts the same inputs into a US school grade. A grade of 8 means a typical 13–14-year-old could follow the text. You can read more about both formulas and their history on Wikipedia’s Flesch–Kincaid page.
How we count syllables
English spelling doesn’t map neatly to sounds, so every readability tool estimates syllables using rules. Ours handles common patterns such as silent “e”, “-ed” and “-es” endings and vowel combinations, which keeps scores close to hand-counted results.
Example
“We fix slow websites.” has 4 words and 6 syllables: very easy. “Our organisation facilitates comprehensive optimisation of underperforming digital properties.” has 9 words and about 30 syllables: very difficult, though it says much the same thing.
Limits of readability formulas
- They don’t judge whether text makes sense, is accurate or is well organised.
- Short words aren’t always simple, and some long words are familiar to everyone.
- They’re designed for English; scores for other languages aren’t comparable.
- Lists, headings and very short texts can skew the numbers. Our tool shows scores once you have 30 words.
What readability score should you aim for?
General web content
A Flesch Reading Ease of 60 or above and a grade level of 8 or below suit most websites. That’s not “dumbing down”; even expert readers process plain language faster, especially on a phone.
Specialist and B2B content
Technical, legal or medical audiences can handle scores in the 40s and 50s when precise terms are necessary. Keep sentences short even when vocabulary is complex.
Calls to action, ads and microcopy
Buttons, headlines, ad copy and meta descriptions should be as easy as possible. Aim for very short sentences and familiar words.
Public sector and health information
Many organisations follow plain language standards because readers may be stressed, unwell or reading in a second language. The US Federal Plain Language Guidelines are a useful reference for any writer.
Why readability matters for SEO
It isn’t a direct ranking factor
Google doesn’t rank pages by Flesch score. Its guidance on creating helpful content focuses on whether content is useful, trustworthy and satisfying to read, not on a formula.
But it affects what does matter
- Engagement: readers who understand you stay longer, read further and act.
- Answer engines: featured snippets, AI Overviews and assistants quote clear, self-contained sentences. A direct 40–60 word answer is easier to extract than a 70-word sentence.
- Accessibility: plain language helps people with cognitive disabilities, dyslexia and non-native speakers, widening your audience.
- Conversions: clear sales copy reduces doubt and friction.
How to use our readability checker
- Type or paste your text into the box. Counts update instantly.
- Check the tiles: words, characters (with and without spaces), sentences, paragraphs, reading time and speaking time.
- Read the readability section once you have 30 words: Flesch score, grade level, average sentence length and your longest sentence.
- Look at the most used words to spot repetition.
- Follow the suggestions, which quote your longest sentences and possible passive voice so you know exactly what to edit.
- Edit and watch the scores change.
How to improve readability: practical edits
Shorten long sentences
Sentences over 25 words are the biggest cause of low scores. Split them at “and”, “but”, “which” or a comma, and keep one idea per sentence. Aim for an average of 15–20 words, with variety so the rhythm doesn’t become choppy.
Choose everyday words
- use, not utilise
- help, not facilitate
- start, not commence
- buy, not purchase (in casual contexts)
- about, not approximately
Prefer active voice
“Our team audited the site” is shorter and clearer than “The site was audited by our team”. Passive voice is fine occasionally, especially when the actor doesn’t matter, but too much makes text vague.
Cut filler words
Words such as “very”, “really”, “just”, “actually” and “basically” rarely add meaning. Delete them and the sentence usually gets stronger.
Break up paragraphs
On a phone, a five-line paragraph on desktop becomes a wall of text. Keep paragraphs to two to four sentences and use lists for steps and options.
Lead with the answer
Start sections with the main point, then add detail. Readers get what they came for immediately, and answer engines can quote your opening sentence.
Explain jargon once
If you need a technical term, define it the first time you use it. A short glossary helps on long guides.
Before and after: editing a paragraph for readability
Here’s how the suggestions work in practice. This paragraph scores in the “difficult” range:
“In order to ensure that your organisation is able to effectively capitalise on the opportunities presented by organic search, it is essential that a comprehensive strategy encompassing technical optimisation, content development and authority building is implemented and continuously refined over an extended period of time.”
It’s one 44-word sentence full of long words. Here’s an edited version:
“To win more customers from Google, you need a plan that covers three things: a technically sound website, helpful content and links from trusted sites. Then keep improving it month by month.”
What changed
- One long sentence became two shorter ones.
- “In order to ensure that” became “to”; “capitalise on the opportunities presented by organic search” became “win more customers from Google”.
- Abstract nouns (optimisation, development, building) became concrete outcomes.
- The list of three items is now explicit, so it’s easier to remember.
The meaning is the same, the word count is lower and a readability checker would now score it as plain English.
Readability for different audiences and formats
Mobile readers
Most web traffic is mobile. Narrow screens make long sentences and paragraphs feel even longer, so be stricter: shorter paragraphs, more subheadings and key points in lists.
Readers using a second language
Plain language helps people reading in English as an additional language, and it translates better if you later localise content. Avoid idioms and culture-specific references where clarity matters.
Email and newsletters
Readers skim emails quickly. Lead with the single most important point, keep sentences short and make the call to action obvious.
Landing pages
Every sentence on a landing page should move the visitor towards one action. Short sentences, specific benefits and clear proof outperform long, abstract paragraphs.
Scripts and presentations
Use the speaking time to plan videos, podcasts and talks. Spoken language needs even shorter sentences than written text, because listeners can’t re-read.
Word count targets for common content
Word count doesn’t decide rankings, but these ranges are useful starting points for planning.
| Content | Typical length | Note |
|---|---|---|
| Title tag | 50–60 characters | Measured in pixels by Google |
| Meta description | 120–155 characters | Key point in the first 120 |
| Product description | 150–400 words | Unique, benefit-focused |
| Service page | 600–1,500 words | Process, pricing, proof, FAQs |
| Blog post or guide | 1,200–2,500+ words | As long as the topic needs |
| Direct answer for snippets | 40–60 words | Placed right under a question heading |
Check title and description length precisely with our SERP preview tool.
How long does it take to read or say 1,000 words?
Our word counter estimates reading time at 238 words per minute, an average silent reading speed for adults reading non-fiction, and speaking time at 150 words per minute, a comfortable pace for presentations and voiceovers. Here are quick references:
| Words | Reading time | Speaking time |
|---|---|---|
| 300 | About 1 minute 15 seconds | 2 minutes |
| 500 | About 2 minutes | 3 minutes 20 seconds |
| 1,000 | About 4 minutes 15 seconds | 6 minutes 40 seconds |
| 1,500 | About 6 minutes 20 seconds | 10 minutes |
| 2,000 | About 8 minutes 25 seconds | 13 minutes 20 seconds |
Showing an estimated reading time at the top of long articles sets expectations and can encourage visitors to commit to reading. Speaking time helps you hit length limits for videos, podcasts and timed talks without rehearsing every draft. Both figures assume readable text: dense, jargon-heavy writing takes longer to read than the estimate, which is one more reason to keep sentences short and plain.
Readability checker vs grammar checker
They solve different problems. A readability checker measures how easy text is to read; a grammar checker finds mistakes in spelling, grammar and punctuation. Run both before publishing: our free grammar checker no sign up catches errors, and the content quality checker adds structure, depth and E-E-A-T signals.
Used together, the two tools cover different jobs: the readability checker tells you whether your writing is easy to follow, and the grammar checker tells you whether it’s correct. Run readability first while you’re still editing structure and sentence length, then proofread with our free grammar checker no sign up as the final step. That order saves time, because there’s no point polishing sentences you’re about to cut or rewrite.
Readability checklist
- Flesch Reading Ease of 60+ for general audiences.
- Average sentence length under 20 words.
- No more than a few sentences over 25 words.
- Paragraphs of two to four sentences.
- Mostly active voice.
- Jargon explained the first time it appears.
- Each section starts with its main point.
- Lists used for steps, options and comparisons.
Related free SEO tools
- Free grammar checker no sign up: fix spelling, grammar and punctuation.
- Content quality checker: score readability, depth and trust signals together.
- Keyword density checker online: check for repetition and keyword stuffing.
- H1 checker: make long content easy to scan.
- SERP preview tool: test short copy for search results.
Ready to check your writing? Use the readability checker above and watch your score as you edit.