Readability Score
Analyze text readability: Flesch-Kincaid, Gunning Fog, SMOG, Coleman-Liau, ARI. Grade levels, reading ease, and detailed text statistics.
Text Statistics
About this tool
Readability Score analyzes any English text and computes seven widely-used readability formulas in real time. The scores help you gauge how easy or difficult your writing is to understand — essential for documentation, blog posts, marketing copy, academic writing, and accessibility compliance.
The tool computes: Flesch Reading Ease (0–100, higher = easier), Flesch-Kincaid Grade Level, Gunning Fog Index, Coleman-Liau Index, SMOG Index, and Automated Readability Index (ARI). Each produces a US grade level or a descriptive label so you know exactly who can read your text.
Examples:
The cat sat on the mat.→ Flesch Reading Ease ~100 (very easy), Grade Level ~1The implementation leverages a polymorphic dispatch mechanism to achieve loose coupling between components.→ Flesch Reading Ease ~10 (very difficult), Grade Level ~20
Use this tool to adjust your writing to your target audience — aim for Grade 6–8 for general audiences, Grade 9–12 for technical documentation, and Grade 14+ for academic papers.
FAQ
What is a good Flesch Reading Ease score? ›
60–70 is plain English easily understood by 13–15 year olds. 0–30 is very difficult (college graduate). 80–100 is very easy (average 11-year-old can read it). Most web content targets 60–80.
What do the grade level scores mean? ›
A grade level of 8 means someone with 8 years of US education (around age 13–14) can understand your text. Lower is easier. Grade 6–8 is recommended for general audiences.
How does the tool count syllables? ›
It uses a combination of vowel-group counting and common English suffix rules. It's accurate for most text but may slightly overcount in technical jargon and undercount in words with silent vowels.
What counts as a "complex word"? ›
Any word with three or more syllables. These words increase the Gunning Fog and SMOG scores. Examples: "implementation" (5 syllables), "cat" (1 syllable — not complex).
I need word counts, character stats, and keyword density — what should I use? ›
This tool focuses on readability formulas. For comprehensive word counting, character analysis, keyword density, find-and-replace, reading time estimates, and auto-save, use the <a href="/word-counter">Word Counter</a> tool.