Tell me the character limit of meta tag?

Although technically meta descriptions can be any length, Google often truncates snippets to between 155 and 160 characters. We advise keeping meta descriptions between 50 and 160 characters long in order to ensure that they are appropriately descriptive.

A meta description should be between 150 and 160 characters long, including spaces. Don't try to write lengthy descriptions that don't make much sense or descriptions with more than 160 characters. You can even use fewer characters and it works great if your descriptions look appealing and read better.

           Meta Description Tag Markup

      <meta name="description" content="">