How are characters counted?
Every letter, number, space, punctuation mark and line break counts as a character. This counter counts characters as people see them, so an emoji like 👍 or a letter like é counts once.
Some systems count differently. X counts most emoji and many CJK characters as two, and databases and SMS often count bytes or code units. The bytes figure shows the UTF-8 size, which is what many technical limits use.
Characters with and without spaces
Most platforms count spaces, so the main character count is the one to check against limits. Characters without spaces is mainly used for translation pricing, academic word limits and some publishing rules.
SEO character limits
Search engines don't enforce hard limits, they truncate what doesn't fit.
- Title tag: about 50 to 60 characters
- Google cuts titles at roughly 600 pixels on desktop. Use the SERP Preview Tool to check the real width.
- Meta description: about 150 to 160 characters
- Google usually shows up to about 920 pixels, two lines on desktop, and often rewrites the description anyway.
- URL slug: as short as is clear
- There's no practical limit, but three to five words is easier to read and share.
Google Ads character limits
Responsive search ads allow up to 15 headlines of 30 characters each and up to 4 descriptions of 90 characters each. The two display path fields allow 15 characters each. Google Ads enforces these limits in the editor, so text over the limit can't be saved.
Social media character limits
These are the limits as the platforms publish them for standard accounts. Platforms change them, so check the platform's own help pages for edge cases.
- X (Twitter): 280 characters
- For standard accounts. Paid accounts can post longer, but only the first 280 or so show in the timeline before "Show more".
- Instagram caption: 2,200 characters
- Only the first line or two are visible before "more", so lead with the hook.
- LinkedIn post: 3,000 characters
- Roughly the first 200 characters show before "see more".
- YouTube title: 100 characters
- Search results and suggestions often show fewer, so put the keyword first.
Why short often beats the limit
A limit is a ceiling, not a target. In search results and feeds, people scan. A title or post that makes its point in the first few words performs better than one that uses every allowed character to say the same thing.
Write the key message first, then use the remaining room for detail that's nice to have if it's cut.