Free tool
Reading Level Checker
Paste any text to estimate its reading grade level.
</> Embed this tool on your siteA reading level checker estimates how hard a piece of text is to read, expressed as a school grade level. It uses the Flesch-Kincaid formula, which combines average sentence length and average syllables per word: longer sentences and longer words mean a higher grade level. Parents and teachers use it to check whether a book, worksheet, or passage matches a child's level, so the reading is challenging without being frustrating. Paste a paragraph and you get the estimated grade, a reading-ease score out of 100, and the word and sentence counts. It runs in your browser and needs no signup.