Meta Length
Determines how much of a meta title or description is visible in search results before truncation, affecting click-through rate but not rankings.
If you have ever treated a character count as a ranking rule rather than a display guideline, you already know the number is not the whole story.
Key points
- Write for the reader and the search intent, not a character target alone.
- Test your snippet in a live SERP, not a static checker.
- Keep meta descriptions unique and relevant to each page.
- Expect Google to rewrite your description if it finds a better match.
- Pixel width matters more than character count for truncation.
A 155-character description that still gets truncated
You write a meta description of 155 characters for a product page. In a desktop SERP it fits perfectly, but on a mobile device with narrower pixel width, the last 20 characters are cut off. The truncated snippet reads 'Buy premium coffee beans – fresh roasted and delivered...' instead of 'Buy premium coffee beans – fresh roasted and delivered to your door.' The missing phrase reduces clarity, and click-through drops by 12% in mobile traffic.
Three things meta length is not
- Not a ranking factor Google does not rank pages higher because a description is 155 characters instead of 172. Length affects display only.
- Not a fixed rule Exact character limits change because Google uses pixel-based display widths, device differences, and occasional snippet rewriting.
- Not a substitute for relevance A description that fits the length target but ignores search intent will still be rewritten or ignored by Google.
Four ways it goes wrong
- Treating length as a ranking signal You optimise for a character count instead of relevance, and the snippet still gets truncated or replaced.
- Ignoring pixel width You rely on character count alone, but truncation depends on rendered space, which varies by device and font.
- Using duplicate descriptions You copy the same meta description across many pages, and Google ignores them all in favour of a page-generated snippet.
- Assuming your description stays Google may rewrite or replace your written meta description with a different snippet from the page if it better matches the query.
Three things to check before publishing
- Test in a live SERP Use a meta description checker or preview tool to see how your snippet renders on desktop and mobile, not just a character count.
- Confirm uniqueness Ensure every page has a unique meta description that summarises its specific content, not a generic template.
- Run a title test A meta title check reveals whether your head title fits within typical display limits and avoids truncation in search results.
Common questions
What is meta title and meta description in SEO?
A meta title is the clickable headline in search results; a meta description is the summary snippet below it. Both live in the HTML <head>.
Does meta description length affect rankings?
No, it affects display and click-through rate only. Google does not rank pages higher for fitting a specific character count.
What is the ideal meta description length?
Roughly 120–160 characters, but pixel width matters more. Test your snippet in a live SERP for the most reliable guidance.
Sources
- Google Search Central Official guidance on how snippets are generated and truncated.
- Yoast Practical advice on writing effective meta descriptions and length guidelines.
- Moz Overview of meta description best practices and common mistakes.