All lenses
icon

SMOG Reading Level

SMOG estimates the U.S. reading grade needed to understand English prose by counting words of three or more syllables and scaling their frequency to a 30-sentence sample. Each occurrence of a polysyllabic word counts. The calculator requires at least three sentences; passages shorter than 30 sentences receive a short-passage estimate note. Results include word and sentence counts and actions to lower or raise the reading level. Consider readers' background knowledge, subject familiarity, and text organization alongside the estimate.

Upload or select your document

Upload a file, choose from your library, or add text and links.

Click to add text
0/100,000 words
(optional)