While there is no strict character limit for meta description tags, Google tends to truncate descriptions that exceed 158 characters. Meta descriptions should be long enough to effectively convey page content. Following best practices, it is recommended to keep meta descriptions within the range of 120-158 characters. Additionally, when evaluating the effectiveness of meta descriptions, it's important to consider pixel-based limitations. It is suggested to create meta descriptions with a minimum of 400 pixels and a maximum of 920 pixels.