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Free caption length checker

Paste or type your caption. Characters, words, hashtags and mentions are counted as you type and compared with the limit of each platform, with a clear warning when you are close or over.

Characters

0

Words

0

Hashtags

0

Mentions

0

Platform limits

  • YouTube · Title (Shorts and videos)

    0 / 100 · 100 left

    Front-load the keyword: long titles are cut on phones. · source

  • YouTube · Description

    0 / 5,000 · 5,000 left

    0 / 60 hashtags · Over 60 hashtags and YouTube ignores all of them; up to 3 show above the title. · source

  • TikTok · Caption (in the app)

    0 / 4,000 · 4,000 left

    Shown by the in-app counter; hashtags and mentions count toward the limit.

  • TikTok · Caption (schedulers / API)

    0 / 2,200 · 2,200 left

    Third-party schedulers post through the Content Posting API, capped at 2,200. · source

  • Instagram · Reel / post caption

    0 / 2,200 · 2,200 left

    0 / 5 hashtags · Since December 2025 Instagram accepts up to 5 hashtags per post or reel. · source

  • LinkedIn · Post

    0 / 3,000 · 3,000 left

    Only the first lines show before “…more”; longer pieces belong in an article.

  • X · Post (standard account)

    0 / 280 · 280 left

    Premium accounts can post longer; links count as 23 characters. · source

Limits checked in October 2026. Emoji can count slightly differently in each app.

Platform limits, checked in October 2026

YouTube: titles up to 100 characters and descriptions up to 5,000 (YouTube Help, “Edit video settings”). YouTube shows up to three hashtags above the title and ignores all of them on a video with more than 60 (YouTube Help, “Use hashtags for YouTube videos”). TikTok: the in-app counter allows up to 4,000 characters, but tools that post through TikTok’s Content Posting API are limited to 2,200 (TikTok for Developers).

Instagram: captions up to 2,200 characters, and since December 2025 a maximum of five hashtags on a post or reel, comments included. LinkedIn: posts up to 3,000 characters. X: 280 characters for a standard account, with every link counted as 23 characters (X developer documentation). Platforms change these numbers; each limit in the checker links to its source where one is published.

Visible length matters more than the limit

The hard limit is rarely the problem. What matters is how much people see before the text is cut with “more”: usually only the first line or two on TikTok, Instagram and LinkedIn. Put the point of the post in that first sentence, and treat everything after it as optional reading.

How characters are counted

The checker counts characters the way people see them: an emoji built from several code points (a skin tone, a family, a flag) counts once. Platforms don’t all count the same way, so emoji-heavy captions can differ by a few characters from the in-app counter; keep a small margin when you are close to a limit. Hashtags are counted from the # sign, and mentions from the @ sign.

How to use the checker

Paste your caption. Each platform row shows the count, the limit and what is left; rows turn amber from 90% of the limit and red when you are over. The hashtag count is checked against platforms that cap them. Nothing leaves your browser.

Need a caption to start from? The [video description generator](/tools/video-description-generator) writes one per platform, and the [hashtag generator](/tools/hashtag-generator) picks the tags.

Frequently asked questions

How many characters can a TikTok caption have?

Up to 4,000 when you post from the app; 2,200 when you post through a scheduler that uses TikTok’s API.

How many hashtags can I use on Instagram?

Five per post or reel since December 2025, whether they are in the caption or the comments.

What is the YouTube title limit?

100 characters, for Shorts and regular videos.

Is my text stored?

No. The counting happens in your browser; nothing is sent anywhere.

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