Limits and SizesX Help says: compose your message (up to 280 characters) and select Post. The same help page also mentions that, once you have finished writing, a longer post can run up to 4,000 characters. Other X pages mention higher figures for subscribers, and the conditions differ by account and change over time, so we show 280 as the standard limit and ask you to check your own account.
Writing in 280 characters
Put the point first. Cut greetings, repeat words and long links. A shorter post is usually clearer, and room left over lets others quote your post with a comment.
Splitting a long thought
If an idea does not fit, write it as a short numbered series of posts, each one able to stand alone. Number them 1/3, 2/3, 3/3 so people know how many to expect.
Read on 14 November 2026 at help.x.com/en/using-x/how-to-post. Apps can change a limit without notice; check the app before an important post.
Questions people ask
Why are there two numbers on the help page?
The standard limit is 280. The page also describes a flow for longer posts up to 4,000. Which one applies to your account depends on your account type, so check in the app.
Do links use up the limit?
A link is made of characters and uses part of it. Check how the app shows the count.