Threads Character Limit (2026) | Posts, Bio & Replies

Published: April 2026 | Last Updated: April 2026

Quick Answer

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

500 characters is a sweet spot. More than Twitter's 280, less than LinkedIn's 3,000. Enough room for a complete thought without rambling.
Your bio syncs from Instagram. By default, Threads pulls your 150-character bio from Instagram. You can edit it separately on Threads.
Images and links don't count. Attached images and links don't eat into your 500-character text limit.
Threads supports the fediverse. Your posts may be visible across ActivityPub-compatible platforms like Mastodon.
Check your post length. Use our character counter to make sure your Threads post fits before publishing.

Draft your Threads post in our free word counter tool to check the exact character count. Quick and easy — no sign-up needed.

Paste your text into our free word counter tool to instantly count words, characters, sentences, paragraphs and pages.

What 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.