Readability Analyzer
Flesch-Kincaid score, reading time, passive voice, keyword density, sentence analysis and writing tips — all in one free tool
What This Tool Analyzes
Flesch Reading Ease
0-100 score — how easy your text is to read
Flesch-Kincaid Grade
US school grade level required to understand your text
Reading & Speaking Time
How long it takes to read or speak your content
Sentence Length
Flags sentences over 25 words that need splitting
Passive Voice
Detects sentences written in passive construction
Keyword Density
Top 10 keywords with frequency and SEO density %
Complex Words
Words with 3+ syllables that may reduce readability
Adverb Count
Excessive adverbs that weaken strong verb choices
Frequently Asked Questions
Q: What is a good Flesch Reading Ease score?
A: For most online content, aim for 60-70. Blog posts and articles should target 65+. Technical writing can be lower. Higher is always more accessible.
Q: What is the Flesch-Kincaid Grade Level?
A: It estimates the US school grade level needed to understand your text. A grade of 8 means an 8th grader can read it. Most websites aim for grade 6-8.
Q: How is reading time calculated?
A: Based on an average reading speed of 200 words per minute, and speaking time on 130 words per minute — the typical adult average.
Q: Is my text uploaded anywhere?
A: No. All analysis runs entirely in your browser using JavaScript. Nothing you type or paste is sent to any server.
Q: How do I improve my readability score?
A: Use shorter sentences (under 20 words), replace complex words with simpler ones, avoid passive voice, and break long paragraphs into smaller ones.