Reading Level Calculator helps you check how easy or difficult your text is to read. Paste your text and see instant results based on formulas like Flesch Reading Ease and Flesch-Kincaid Grade Level.
This tool is useful for:
Parents who want to match books with their child’s grade.
Teachers who need to check lesson materials.
Writers and bloggers who want clear and simple content.
Paste text or upload a .txt file. Get Flesch Reading Ease, Flesch‑Kincaid Grade, SMOG, Gunning Fog, Coleman‑Liau, and ARI.
Highlights
Long sentences and complex lines appear here after you run the check.
Results are estimates based on common readability formulas. Always review for clarity and audience.
A reading level shows how difficult a piece of text is to understand. It is usually expressed as a school grade. For example, grade 6 means an average sixth grader should be able to read it.
Formulas like Flesch-Kincaid and SMOG look at sentence length, word length, and syllables. Longer sentences and complex words make text harder to read.
Most online articles aim for grade 6 to 8. This makes the text clear for a wide audience.
90–100: Very easy to read, simple sentences.
60–89: Easy to read for most people.
30–59: Harder to read, college level.
0–29: Very difficult to read.
It helps parents choose books at the right level for children. Teachers can adjust lesson material to match student ability. Writers can check if their material is too complex.
Use shorter sentences.
Choose simple words instead of complex ones.
Avoid long blocks of text.
Use headings and bullet points for clarity.
Yes. Paste any text from a children’s book and see if the grade level matches your child’s age or school grade.
The formulas are designed for English. For other languages, the results may not be accurate.
It’s better to test at least one full paragraph. Very short samples can give misleading scores.
The SMOG index estimates how many years of education a reader needs to understand a text. It focuses on polysyllable words.
Not always. For children’s material, a lower grade level is better. For academic or technical writing, higher levels may be expected.