NT Nano TextUtils
Ctrl K
● Analysis & Metrics

Text Complexity & Readability Analyzer

This tool evaluates the complexity of your writing using standard readability formulas like Flesch-Kincaid. It analyzes sentence length, syllable count per word, and lexical density to determine the approximate education level required to understand the text. Useful for ensuring your content is accessible to a general audience or appropriately sophisticated for academic contexts.

Your text never leaves your browser. Everything is processed locally.

Enter your content

Input Text

Text Complexity

Unique Characters:0
Unique words:0
Average Word Length:0
Average Sentence Length:0
Words ≥4 chars::0
How this tool works Documentation & SEO

This tool evaluates the complexity of your writing using standard readability formulas like Flesch-Kincaid. It analyzes sentence length, syllable count per word, and lexical density to determine the approximate education level required to understand the text. Useful for ensuring your content is accessible to a general audience or appropriately sophisticated for academic contexts.

Analyze text readability and complexity online. Score your writing with Flesch-Kincaid metrics. Optimize content for your audience's reading level.

Technical Writers simplifying documentation
Teachers assessing reading materials for students
Marketers ensuring ads are easy to read
Lawyers analyzing contract clarity
ESL (English as Second Language) students
Key features
  • Flesch-Kincaid Grade Level estimates
  • Sentence complexity analysis
  • Syllable counting algorithms
  • Lexical density scoring
  • Instant feedback for editing
  • Privacy-focused text processing
Frequently Asked Questions FAQ
What is Flesch-Kincaid?
It is a readability test designed to indicate how difficult a passage in English is to understand. A higher score in 'Reading Ease' means the text is easier to read.
What is a good readability score?
For general web content, aiming for a 6th to 8th-grade reading level ensures maximum accessibility. For academic papers, a college-grade level (13+) is expected.
How do you calculate complexity?
We analyze two core factors: sentence length (words per sentence) and word length (syllables per word). Long sentences with polysyllabic words increase the complexity score.