Reading Level Test Free Online — Check Any Text, Document, or Website

Test the reading level of any text in seconds. Paste your content — get Flesch-Kincaid grade level, Gunning Fog index, and reading ease score. Free, no signup, works on any text from essays to emails to web content.

Reading Level Scores — What They Mean

Score Range	Flesch Reading Ease	Grade Level	Who Can Read It	Example
90-100	Very easy	Grade 5	11-year-old	Children's books, simple instructions
80-89	Easy	Grade 6	12-year-old	Consumer magazines, blog posts
70-79	Fairly easy	Grade 7	13-year-old	USA Today, marketing emails
60-69	Standard	Grade 8-9	14-15 year-old	New York Times, business writing
50-59	Fairly difficult	Grade 10-12	16-18 year-old	Literary fiction, industry reports
30-49	Difficult	College	18+ with degree	Academic papers, legal documents
0-29	Very confusing	Graduate+	Advanced degree	Tax code, medical research

What to Test (and Why)

Blog Posts and Articles

Content that ranks well on Google typically scores grade 6-8. Lower grade level = lower bounce rate = better rankings. Test your article before publishing. If it scores above grade 9, you are likely losing readers who give up before the payoff.

Emails — Sales and Internal

The average office worker gets 121 emails per day. They decide whether to read or skip in under 3 seconds. Cold sales emails that convert best test at grade 5-6. Internal emails can be grade 7-8 since the audience knows your terminology.

Landing Pages and Sales Copy

Every grade level above 6 costs you conversions. The reader is deciding whether to buy, not whether to study. Strip jargon, shorten sentences, use the simplest word that conveys your meaning.

Legal and Healthcare Content

The Plain Writing Act of 2010 requires US federal agencies to write at a level the public can understand. The FDA recommends patient information at grade 6-8. If you are writing any public-facing content for regulated industries, testing reading level is not optional.

Three Formulas, One Answer

Our reading level test runs three formulas simultaneously. Why three? Because each has blind spots:

Formula	What It Measures	Best For	Blind Spot
Flesch-Kincaid	Syllables + sentence length	General content	Doesn't penalize jargon specifically
Gunning Fog	Complex words (3+ syllables)	Business/technical writing	Over-penalizes common long words (e.g., "beautiful")
SMOG	Polysyllabic words in sample	Healthcare, government	Needs 30+ sentences for accuracy

If all three scores agree (within 1-2 grade levels), you have a confident reading level. If they disagree, look at why — usually one formula is catching something the others miss.

Complete Text Quality Workflow

1. Test reading level — know your baseline
2. If too high, simplify sentences and replace complex words
3. Tone rewriter — auto-simplify to a target tone
4. Grammar check — catch errors introduced while simplifying
5. Headline analyzer — test your title for click-through rate
6. Word counter — ensure you hit your target length
7. Final reading level retest