TikTok Caption Character Limit

Every limit is taken from the platform’s own help or developer pages, last checked on 4 October 2026. Platforms change these without notice, so if a figure looks wrong, the linked page is the one to trust.

TikTok’s developer documentation says a video caption posted through its Content Posting API can be up to 2,200 characters. This is the limit that scheduling tools and other apps that post to TikTok for you must stay within.

TikTok’s Help Center does not publish a caption limit for posts written directly in the TikTok app, or a bio limit, so we do not give one. If you post from the app, its own counter is the final word.

The 2,200 is measured in UTF-16 code units, the way most software stores text. Ordinary letters, numbers and punctuation use one each. Most emoji use two, and emoji built from several pieces, such as flags, families or skin tones, use more. Our counter shows each emoji as one character, so leave some room if your caption is full of them.

A caption of 300 characters with five hashtags is well inside the limit. A caption of 2,150 letters plus 30 emoji is not: the emoji add at least 30 more units, taking it past 2,200.

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For anything else, the character counter counts with and without spaces.