The meta description is an HTML attribute that provides a brief summary of a web page. Search engines such as Google often display the meta description—typically up to 160 characters long—in search results where they can highly influence user click-through rates.
Meta descriptions can be any length, but Google generally truncates snippets to ~155–160 characters. It's best to keep meta descriptions long enough that they're sufficiently descriptive, so we recommend descriptions between 50–160 characters.