Readability Score Checker
Check your text against 5 widely used readability formulas at once.
Flesch Reading Ease
58.4
Flesch-Kincaid Grade
7.4
Fairly Difficult (10th–12th grade)
Other Grade-Level Formulas
9.4
Gunning Fog
9.7
SMOG
9.8
Coleman-Liau
6.3
ARI
| Words | 28 |
| Sentences | 3 |
| Syllables | 46 |
| Complex Words (3+ syllables) | 4 |
About Readability Score Checker
Readability scores estimate how easy a piece of text is to understand, based on sentence length and word complexity. Relying on a single formula can be misleading, so this tool calculates five widely used metrics together: Flesch Reading Ease (0–100, higher means easier), Flesch-Kincaid Grade Level, the Gunning Fog Index (weighted toward complex, multi-syllable words), SMOG (commonly used for healthcare and safety content), and the Coleman-Liau Index and Automated Readability Index (both based on character counts rather than syllable estimates, making them more robust to unusual words). These scores are commonly used by writers, editors, and SEO content teams to make sure content matches its intended audience — for example, aiming for an 8th-9th grade reading level for general web content.
Read the full Flesch-Kincaid guideFrequently Asked Questions
Scores of 60-70 are considered easily understood by 13-15 year olds and are a common target for general web content. Scores above 90 are very easy (5th grade level), while scores below 30 indicate very difficult, academic-level text.
It estimates the U.S. school grade level a reader would need to easily understand the text. A score of 8.0 means the text is readable by an average 8th grader.
Each formula weighs sentence length and word complexity slightly differently, and some (SMOG, Gunning Fog) are more sensitive to long or technical words. Looking at several together gives a more reliable read than trusting any single score.
Flesch-Kincaid, Gunning Fog, and SMOG estimate difficulty from syllable counts, which requires guessing pronunciation. Coleman-Liau and ARI instead use raw character counts, which is more mechanically reliable for unusual words, abbreviations, or non-dictionary terms.
Content that matches your audience's reading level tends to have better engagement, lower bounce rates, and wider reach — search engines increasingly favor content that satisfies user intent, which readability contributes to.
The tool uses a standard vowel-group heuristic to estimate syllables per word, which is the same approach used by most readability calculators since dictionary-perfect syllable counting isn't practical for arbitrary text.