Free Writing Tool
Free Readability Checker Online
Analyze your text for readability, reading difficulty, grade level, sentence length, word count and estimated syllables. Useful for academic writing, business documents, websites, articles and professional content.
Privacy: Your text is analyzed directly in your browser. No account is required and the tool does not need to send your text to a server.
Readability Results
The calculator updates automatically as you enter or edit your text.
Flesch Reading Ease
0
No text
Flesch-Kincaid Grade
0
Approximate grade level
Words
0
Total words
Sentences
0
Detected sentences
Average Sentence Length
0
Words per sentence
Estimated Syllables
0
Estimated total
Characters
0
Including spaces
Understanding Readability Scores
Readability formulas provide estimates of how easy or difficult written content may be for a reader to understand.
Flesch Reading Ease
The Flesch Reading Ease score uses sentence length and word syllable patterns to estimate reading difficulty. Higher scores generally indicate easier text.
Flesch-Kincaid Grade Level
The Flesch-Kincaid Grade Level estimates the level of education a reader may need to understand the text comfortably.
Who Can Use a Readability Checker?
Readability analysis can be useful whenever clear communication matters.
Students and Researchers
Review essays, reports, research papers, abstracts and other academic content for sentence complexity and readability.
Bloggers and Writers
Check articles and online content before publishing to make important information easier for readers to follow.
Businesses
Review business communications, reports, policies, proposals and customer-facing documents.
Marketers
Evaluate website copy, landing pages, advertising content and marketing materials for readability.
Technical Writers
Review manuals, guides, procedures and technical explanations for sentence complexity and audience suitability.
Website Owners
Analyze website content and improve clarity for visitors, customers and other online audiences.
How the Readability Checker Works
The tool analyzes the text you enter and calculates several measures, including word count, sentence count, average sentence length and estimated syllable count.
It then uses these measurements in the Flesch Reading Ease and Flesch-Kincaid Grade Level formulas to provide an estimate of reading difficulty.
Readability scores should be treated as useful indicators rather than absolute judgments. A high or low score does not determine whether writing is accurate, persuasive, technically correct or appropriate for its intended audience.
Specialized terminology, proper names, abbreviations and unusual words can also affect automated readability calculations.
Related Writing Tools
Use these additional tools to review and prepare your written content.
Frequently Asked Questions
What is a readability checker?
A readability checker analyzes written text and estimates how easy or difficult the text may be to read.
What does the Flesch Reading Ease score mean?
The Flesch Reading Ease score estimates how easy a passage is to read. Higher scores generally indicate easier text.
What does the Flesch-Kincaid Grade Level mean?
The Flesch-Kincaid Grade Level provides an approximate reading level based on sentence length and word complexity.
Can I use this tool for academic writing?
Yes. You can use this tool to review essays, reports, research papers, abstracts and other academic or professional content.
Does this tool store my text?
No account is required. The readability calculations are performed directly in your browser.
Explore More Free Writing Tools
Use Lamtas writing tools to analyze, prepare and improve written content for academic, professional, business and online use.