# What Is a Hashtag on X?

Source: https://trygrowx.app/glossary/hashtag (updated 2026-11-04)

A hashtag is a word or phrase that starts with the # sign, such as #buildinpublic. Clicking it shows other posts that use the same tag, so it groups conversation around a topic. Hashtags can go anywhere in a post, and spaces or punctuation break them, according to [X's help page on hashtags](https://help.x.com/en/using-x/how-to-use-hashtags).

## Example

"Shipped dark mode today after 40 user requests. #buildinpublic" Anyone browsing #buildinpublic can find the post, alongside others sharing their progress.

## Why it matters for growth

- **Use them sparingly.** X's help centre recommends no more than two hashtags per post as best practice, while allowing as many as you like.
- **Their role has shrunk.** Elon Musk said in December 2024 that X no longer needs hashtags and that they look ugly, as [FOX 5 reported](https://www.fox5dc.com/news/hashtags-x-elon-musk-says-please-stop-using-them), and in June 2025 he said they would be barred from X ads, per [Business Today](https://www.businesstoday.in/technology/news/story/esthetic-nightmare-elon-musk-says-hashtags-will-be-banned-on-x-ads-starting-tomorrow-481950-2025-06-26). X's help page still recommends up to two, so the official guidance and the owner's comments point in slightly different directions.
- **Clear words do the work.** X's search and recommendations read the text of your post, so naming your topic plainly helps the right readers find you.

A good use today: a single, well-known community tag (like #buildinpublic) or an event tag people actively follow.

## Related terms

- [Trends](https://trygrowx.app/glossary/trends)
- [Niche](https://trygrowx.app/glossary/niche)
- [Algorithm](https://trygrowx.app/glossary/algorithm)
- [Hook](https://trygrowx.app/glossary/hook)
- [Impressions](https://trygrowx.app/glossary/impressions)

## Frequently asked questions

### How many hashtags should I use on X?

Zero to two. X's own guidance caps the recommendation at two, and many growth-focused accounts now use none.

### Do hashtags help posts reach more people?

A relevant, active tag can help people browsing that tag find you. Most reach on X comes from the [algorithm](https://trygrowx.app/glossary/algorithm) showing posts to people likely to engage, which depends far more on the post itself.

Last checked November 2026.

Check your post's length, hashtags and readability in the [post checker](https://trygrowx.app/tools/post-checker).