Social posts · 4 limits
X allows 280 weighted characters. LinkedIn shows about 210 characters on desktop and 140 on mobile before “see more”, and Instagram about 125 before “more”.
Last reviewed · How we measure
| Screen | Limit | When it’s too long | Where the number comes from | Reviewed |
|---|---|---|---|---|
| X (Twitter) postX | 280 characters | X won’t post it unless your account has a subscription that allows longer posts. | Official limit · source | |
| LinkedIn post (before “see more”, desktop)LinkedIn | 210 characters | Cut on screen with “…” | Measured on devices · source | |
| LinkedIn post (before “see more”, mobile)LinkedIn | 140 characters | Cut on screen with “…” | Measured on devices · source | |
| Instagram caption (before “more”)Instagram | 125 characters | Cut on screen with “…” | Measured on devices · source |
There are two different limits: what the platform accepts and what people see before they tap. The second one decides whether your hook lands.
X weights characters: every link it recognises counts as 23, and emoji and Chinese, Japanese or Korean characters count as 2.
FAQ
About 210 on desktop and 140 on mobile in device tests; the rest sits behind “see more”.
Every link X recognises counts as 23 characters, however long or short it is.