Threads Character Counter

How to use

1. 1Type or paste your copy into the Post, Reply, Bio, Display name, Username, Link label, or Alt text field, or click Load sample to start from a realistic example.
2. 2Watch the per-field counter: it turns amber as you approach the limit (for example 450 characters on a 500 character post) and red if you go over.
3. 3Switch the device toggle between desktop and mobile to see how Threads truncates a long post behind a '... more' link at about 280 characters on desktop or 190 on mobile.
4. 4Use the profile preview to see how the display name, @ handle, bio, and link label render at the top of your Threads profile.
5. 5Check the username card for a valid Threads handle (lowercase letters, digits, periods, and underscores; no leading, trailing, or doubled periods).
6. 6Click Copy report to copy a clean text summary of every field count, status, and post analysis you can paste into a brief, a content QA doc, or a hand-off to a client.

About this tool

Threads Character Counter counts every Threads field against the limits Meta enforces at save time and shows a live preview of how a long post is collapsed behind the '... more' link. Type into the Post, Reply, Bio, Display name, Username, Link label, and Alt text fields and each one shows its character count, remaining characters, and a green, amber, or red status counter that flips as you approach or exceed the limit. The tool counts characters by grapheme cluster using Intl.Segmenter where available, so a flag emoji, a surrogate-pair pictograph, or an accented letter built from combining marks counts as one character the same way the Threads app does. The feed preview reproduces the Threads card layout: profile photo placeholder, display name, @ handle, post time, the post body truncated behind a '... more' link, and the like, reply, repost, and share action row; switch between desktop and mobile to see how a post is truncated at the widely cited 280 character (desktop) or 190 character (mobile) cutoff. The profile preview lays out the display name, @ handle, bio, link label, and follower row the same way they appear at the top of a Threads profile. The post analysis panel counts lines, hashtags, mentions, and external links in the post body, plus the number of characters visible before the '... more' fold, so you can fit your hook above the line where the feed truncates. Username validation enforces the Threads handle rules (lowercase letters, digits, periods, and underscores, no leading or trailing period, no consecutive periods) so you can check whether a handle is even a legal format before you try to register it. A cheat sheet keeps every Threads character limit visible while you write: Post 500, Reply 500, Bio 150, Display name 30, Username 30, Link label 30, and Alt text 1,000. Useful for personal brand creators planning the hook of a Threads post, founders writing a 150 character bio that has to do the work of a 2,000 character LinkedIn About section, brand teams localizing copy across Threads, Instagram, and Twitter, and anyone tired of pasting copy into the Threads composer just to learn it is over 500 characters. Everything runs locally in your browser; no posts, bios, or display names are uploaded, logged, or shared, so unpublished drafts stay on your device. Limits reflect Meta's published Threads policies and may change over time; the '... more' cutoff is not officially published and varies by viewport and post type, so treat the 280 and 190 character values as planning guidelines, not exact pixel positions.

Free to use. Works in your browser. No signup, no login.