Threads allows up to 500 characters per post. Bios are limited to 150 characters. Complete 2026 guide to all Threads character limits.
Published: April 2026 | Last Updated: April 2026
Photo by Szabó Viktor on Pexels
Threads posts allow up to 500 characters. Your bio is limited to 150 characters (synced from Instagram by default).
| Field | Character Limit | Notes |
|---|---|---|
| Post | 500 | Standard post including replies |
| Bio | 150 | Synced from Instagram unless edited separately |
| Username | 30 | Shared with your Instagram username |
| Reply | 500 | Same limit as standard posts |
| Alt Text | 500 | Accessibility description for images |
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Open Word CounterWhat is the Threads character limit?
Threads allows up to 500 characters per post. This applies to both original posts and replies.
Is Threads' character limit the same as Twitter's?
No. Threads allows 500 characters per post, compared to Twitter's 280 characters for free accounts. Threads gives you nearly double the space.
What is the Threads bio character limit?
Threads bios are limited to 150 characters, the same as Instagram. By default, your Threads bio is synced from your Instagram profile.
Do images count towards Threads' character limit?
No. Attached images and links do not count towards the 500-character text limit on Threads.
The sources and check dates in this table come from one versioned data file — the place we record every check we make. The rest of this page, and the limits built into our tools, are still separate copies, so when we correct a figure we correct it in each place. This table is how we keep ourselves honest while we do.
Every figure on this page was carried across from our own older pages. Not one of them has been checked against the platform’s own documentation, so none of them carries a source or a last-checked date. We would rather show you that plainly than print a date we have not earned.
Still to be checked against: Threads Help Centre (help.instagram.com/threads)
| Field | Limit | Notes | Source | Last checked |
|---|---|---|---|---|
| Post | 500 | Standard post including replies | No source recorded | Not yet verified against the platform’s own documentation |
| Bio | 150 | Synced from Instagram unless edited separately | No source recorded | Not yet verified against the platform’s own documentation |
| Username | 30 | Shared with your Instagram username | No source recorded | Not yet verified against the platform’s own documentation |
| Reply | 500 | Same limit as standard posts | No source recorded | Not yet verified against the platform’s own documentation |
| Alt Text | 500 | Accessibility description for images | No source recorded | Not yet verified against the platform’s own documentation |