If visitors land on your page and leave within seconds, your content may be too difficult to read — too many long sentences, complex words, or dense paragraphs that make reading feel like work. A readability score quantifies how easy your content is to read and gives you a clear target to improve against. This guide explains how to check your readability score free online, what the numbers mean, and the specific changes that make the biggest difference.
What Is a Readability Score?
A readability score is a numerical measure of how easy a piece of writing is to read and understand. It is calculated using formulas that analyse sentence length, word length, syllable count, and other structural features of text. The most widely used formula is the Flesch Reading Ease score, which produces a number from 0 to 100:
- 90–100: Very easy — simple, short sentences. Appropriate for an 11-year-old.
- 70–80: Easy — conversational English. Appropriate for a 13-year-old.
- 60–70: Standard — plain English. Appropriate for a 15-year-old. This is the target for most web content.
- 50–60: Fairly difficult — some complexity. Academic or professional writing.
- 0–30: Very difficult — academic, legal, or technical text. Most readers struggle.
The related Flesch-Kincaid Grade Level translates the same analysis into US school grade equivalents — a grade of 8 means the content is readable by an average 8th grader (13-14 years old). Most content marketing professionals target grade 6–8.
How to Check Your Score Free Online
Our free readability checker calculates your Flesch Reading Ease score, Flesch-Kincaid Grade Level, and other key metrics instantly — no signup required:
Step 1: Open the tool
Go to searchranktool.com/readability-checker. No account needed.
Step 2: Paste your content
Copy your article, blog post, or any piece of text and paste it into the text area. Include all body text — headings, paragraphs, and lists. The more complete your text, the more accurate the score.
Step 3: Read your results
The tool instantly shows your Flesch Reading Ease score, grade level, average sentence length, average word length, and total word count. Each metric comes with context explaining what it means and whether it is in the target range for web content.
Step 4: Edit and recheck
Make improvements to your text based on the results (see the improvement section below), then paste the revised version back into the tool to see how your score changes. Aim for a Flesch score of 60–70 or a grade level of 7–9 for most blog content.
Reading the Scales
Understanding what each metric is measuring helps you make targeted improvements:
Flesch Reading Ease (0–100, higher = easier)
The primary readability score. Calculated from average sentence length and average syllables per word. High scores mean short sentences and simple words. Low scores mean long sentences and complex vocabulary. Target: 60–70 for blog posts.
Flesch-Kincaid Grade Level (school grade, lower = easier)
The same data expressed as a US grade level. Grade 8 = readable by an average 8th grader. Most popular websites target grade 6–9. Academic writing sits at grade 12–16. Target: grade 7–9 for general audience blog content.
Average sentence length (words per sentence)
A direct driver of readability. Sentences over 25 words are difficult to parse. Target: 15–20 words per sentence on average.
Average word length (characters per word)
Longer words have more syllables and are harder to process. Target: under 5 characters per word on average for accessible web writing.
What Score Should You Aim For?
The right target depends on your audience:
- General consumer blog content — Flesch 60–70, Grade 7–9
- News articles — Flesch 60–70, Grade 8
- Technical or professional content — Flesch 40–60, Grade 10–12
- Academic writing — Flesch 20–40, Grade 13–16
- Children's content — Flesch 80–100, Grade 3–5
For an SEO blog targeting bloggers, content writers, and small business owners — as SearchRankTool does — the target is Flesch 60–70, Grade 7–9. This is the plain English standard used by major publications like the BBC, BuzzFeed, and most successful content marketing blogs.
Do not over-simplify. Writing at grade 3 for a professional audience feels condescending. The goal is accessible, not dumbed-down. Write as clearly as a good teacher explains a complex topic — using simple words and sentences, but not avoiding depth or detail.
How to Improve Your Readability Score
If your score is too low (content is too difficult), these changes have the biggest impact:
1. Break long sentences into two
Any sentence over 25 words is a candidate for splitting. Look for "and," "but," "because," and "which" — these are often where a long sentence can be cleanly divided into two shorter ones.
2. Replace complex words with simple ones
Every field has jargon that can be replaced with plain English without losing accuracy: "utilise" → "use," "commence" → "start," "demonstrate" → "show," "facilitate" → "help." The simpler word is almost always better.
3. Shorten paragraphs
Long paragraphs (5+ sentences) feel dense and discouraging to read online. Break them into 2–3 sentence paragraphs. White space is your friend — it makes content feel faster to read.
4. Use bullet points for lists
Any time you write "firstly... secondly... thirdly..." replace it with a bullet list. Lists are faster to scan and significantly improve readability scores because they break up long sentence structures.
5. Use active voice over passive voice
"The article was written by the editor" (passive) → "The editor wrote the article" (active). Active voice is shorter, clearer, and scores better on readability formulas.
6. Use subheadings every 200–300 words
Subheadings break content into scannable sections and reduce the perceived density of the text. They do not directly affect readability scores, but they dramatically improve the reading experience.
After making improvements, recheck your score with our readability checker to measure the impact of your changes. Also check your keyword density after editing — simplifying sentences sometimes reduces keyword presence.
Readability and SEO
Readability and SEO are connected in several important ways:
Engagement time — content that is easy to read keeps visitors on the page longer. Higher average engagement time signals to Google that your page is valuable, contributing to better rankings over time.
Bounce rate — difficult-to-read content causes visitors to leave quickly. A high bounce rate, especially when combined with short session times, suggests poor content quality to Google's ranking systems.
Featured snippets — Google's featured snippet algorithm favours clear, concise answers written in plain English. Overly complex answers are less likely to be selected. Readability-optimised answers stand a better chance of winning snippet positions.
Voice search — voice search queries expect conversational answers. Content written in plain, conversational English performs better for voice search than dense, formal writing.
According to research by Backlinko, pages with higher readability scores tend to rank better in competitive search results, though the relationship is correlational rather than causal — easier-to-read content tends to attract more engagement and links, which are the actual ranking factors.
Frequently Asked Questions
What is a good readability score for a blog post?
For most general-audience blog posts, aim for a Flesch Reading Ease score of 60–70 and a Flesch-Kincaid Grade Level of 7–9. This corresponds to plain, accessible English that most adults can read comfortably. Scores below 50 suggest the content is too academic or complex for a general web audience, while scores above 80 may be too simple for professional topics.
Does readability affect Google rankings?
Readability is not a direct ranking factor in Google's algorithm. However, readable content improves user engagement metrics (time on page, scroll depth, return visits) which are indirectly associated with better rankings. Additionally, readable content earns more social shares and backlinks — both confirmed ranking factors. The SEO case for readability is indirect but well-supported by data.
How do I check the readability of a specific paragraph?
Paste just that paragraph into our readability checker instead of your full article. This is useful for checking introductions (which should be the most readable part of any article — aim for grade 6 or lower in the first paragraph) or for isolated sections that feel dense when you re-read them.
Is the Flesch score the only readability measure?
No — other readability formulas include Gunning Fog Index (focuses on complex word percentage), SMOG Index (predicts years of education needed), Coleman-Liau Index (uses character count rather than syllable count), and Automated Readability Index. Our readability checker provides the Flesch Reading Ease and Flesch-Kincaid Grade Level, which are the most widely used and well-validated measures for web content assessment.