Google New Guideline for Meta Data

Google Increases Title and Meta Description Length in Search Results

 

According to your idea  about the Google guidelines for meta data  length of Description and title it should be 55-60 characters in the title, and 155-160 for the meta description .This is  standard but it seems the times have changed and new update has come in frame.

 

Google has increased the parameter width of the main search results, and as a result, the lengths for meta descriptions and titles before they become truncated has increased too.

SEMPost noticed Google had increased the width of the search results by about 100 pixels. Now sitting at 600 pixels wide, the search results have more room for a bigger title and meta description.

Here are the new lengths for desktop:

Title length: 70-71 characters

• Meta description length: 200

And here are the new lengths for mobile:

• Title length: 78 characters
• Meta description length: 170-172  
  More details about Seo is at http://bit.ly/2bz1Mly