Readability Checker

Readability Checker — Measure Your Writing Grade Level

This readability checker computes six industry-standard scores from your text in real time. Each formula weighs sentence length, word length and syllable count slightly differently — together they give you a reliable picture of how difficult your writing is to read.

What the scores mean

• Flesch Reading Ease (0–100) — higher is easier. 60–70 is ideal for general audiences; 30 and below is college-level or academic.
• Flesch-Kincaid Grade — U.S. school grade needed to understand the text. 8 means 8th-grade level.
• Gunning Fog — years of formal education. 7–8 is ideal for broad audiences; 12+ is technical/academic.
• SMOG Index — grade level needed for complete comprehension. Widely used in healthcare writing.
• Coleman-Liau — grade level based on characters per word, not syllables. Good for machine analysis.
• Automated Readability Index (ARI) — grade level based on character count and sentence length.

Target scores by content type

• Blog posts & marketing copy — Flesch 60–70, grade 6–8
• News articles — Flesch 55–65, grade 8–10
• Business writing — Flesch 50–60, grade 10–12
• Academic & legal — Flesch 30–50, grade 13+
• Health & safety instructions — Flesch 70+, grade 6 or below

All six scores run entirely in your browser — nothing is sent to a server. Also try the sentence length analyzer and passive voice detector for deeper writing analysis.