Readability Score

What is a readability score?

A readability score is a numerical measure of how easy text is to read — this checker reports Flesch Reading Ease (0–100) and Flesch-Kincaid Grade Level. Paste text — this page does not rewrite copy or grade a student.

This checker calculates both scores and more from any text you paste in. It's designed for writers and content teams who want an objective, data-driven read on whether their content is accessible to their target audience — not just a gut feeling.

How to Use the Readability Score Checker

1. Paste your text. Copy the content you want to check — a blog post, product description, email, or in-app message — and paste it into the text box.
2. Run the analysis. Click the analyze button. The tool calculates your Flesch Reading Ease, Flesch-Kincaid Grade Level, and other readability metrics instantly.
3. Read your scores. Check your Reading Ease score (60–70 is the target for general web content) and your Grade Level (aim for 7–8 for broad audiences).
4. Edit and re-check. Revise your text to shorten sentences or replace complex words, then paste the updated version to verify your score improved.

Who Is This For?

• Content teams writing blog posts or product copy. If your target audience is a general consumer, text above a grade 10 reading level will create unnecessary friction and hurt engagement. This tool confirms your content lands in the right range before you publish.
• UX writers checking in-app text. Error messages, onboarding copy, and tooltips that read at a college level confuse users who are already under cognitive load. A grade 6–8 target keeps your product accessible.
• Students checking their writing tone. Academic writing can drift into overly complex territory — or, for some assignments, be too casual. A quick readability check helps calibrate the register before submission.

Key Benefits

• Privacy. Tool inputs stay in the browser.
• Free. No subscription, no paywall, no character limits.
• No account required. Paste, analyze, done.
• Multiple readability formulas in one view. Flesch Reading Ease, Flesch-Kincaid Grade Level, and other metrics give you a fuller picture than any single score alone.

Common Use Cases

A SaaS content team checks every blog post before publishing. Their target buyer is a mid-market operations manager — smart but busy. Posts that score above grade 10 get revised before going live to reduce bounce rate and improve time on page.

A UX writer at a fintech company pastes every in-app notification into this tool before it ships. Financial compliance language tends to drift toward grade 14+; the tool helps them identify exactly which sentences to simplify.

A graduate student writing a literature review wants to make sure their intro section is accessible before adding it to a general-audience abstract. They check the score, then revise the two longest sentences to bring it from grade 16 to grade 12.

The Flesch Reading Ease Scale

The Flesch Reading Ease formula analyzes the ratio of syllables to words and words to sentences. Here's how the score maps to audience and grade level:

How to Improve Your Readability Score

1. Shorten your sentences. If a sentence uses "and," "but," or "because," consider splitting it into two. Shorter sentences are a reliable way to improve your score.
2. Use simpler words. Swap multi-syllable jargon for shorter alternatives: "use" instead of "utilize," "help" instead of "facilitate," "show" instead of "demonstrate."
3. Remove adverbs. Words ending in "-ly" (actually, basically, significantly) usually add length without adding meaning. Delete most of them.

After improving your readability score, use the Meta Tag Generator to write a title and description that accurately reflects your simplified content — and the Keyword ROI Calculator to estimate whether the ranking you're targeting is worth the content investment.

Source: Flesch Reading Ease developed by Rudolf Flesch (1948). Flesch-Kincaid Grade Level adapted for the U.S. Navy (1975). See Readable — Flesch Readability Explained for a full breakdown of both formulas.

Frequently Asked Questions

What is a readability score? ▼

A readability score is a numerical measure of how easy text is to read. The Flesch Reading Ease score ranges from 0–100, where 60–70 is plain English suitable for most general audiences. The Flesch-Kincaid Grade Level expresses the same measurement as a US school grade level — a score of 8 means the text is readable by an average 8th grader.

Is this tool free? ▼

Yes. This Readability Score is free to use now — ads are not live yet — with no account required. It runs in this tab. Tool inputs stay in your browser. The site uses aggregate Google Analytics.

What is a good readability score? ▼

For general web content, aim for a Flesch Reading Ease of 60–70 and a Flesch-Kincaid Grade Level of 7–8. Legal and academic documents often score lower (harder to read). User-facing product copy and blog posts should target grade 6–8 to stay accessible to the widest audience.

How do I improve my readability score? ▼

Use shorter sentences, prefer simpler words over complex ones, avoid passive voice, and break up long paragraphs. Swapping multi-syllable words for shorter synonyms has the biggest impact — for example, "use" instead of "utilize," or "help" instead of "facilitate."

What is the Flesch-Kincaid formula? ▼

The Flesch Reading Ease formula is: 206.835 − (1.015 × average words per sentence) − (84.6 × average syllables per word). Higher scores mean easier text. The Flesch-Kincaid Grade Level uses a related formula: 0.39 × (words ÷ sentences) + 11.8 × (syllables ÷ words) − 15.59.

Does readability affect SEO? ▼

Indirectly, yes. Google uses natural language processing to evaluate content quality, and overly complex text relative to the topic can create a mismatch between user intent and content delivery. More directly, difficult text increases bounce rates and reduces time on page — both behavioral signals that affect search rankings over time.