The publishing ceiling
This is the maximum text a platform accepts. Go past it and the post can be rejected, trimmed, or blocked before publishing.
Creator Toolkit
Social Media Character and Caption Counter
Write once, then check whether your caption fits TikTok, X, Instagram, YouTube, and LinkedIn before you post.
8
Platform modes
Live
Remaining count
# @
Hashtags and mentions
Free Counter
Paste your caption or post
TikTok Caption
Platform Rules
TikTok Caption
Preview
DigitalSub Pro
TikTok caption preview
Your preview will appear here as you type.
Free tool, no sign-up
You write the perfect caption, hit post, and half of it disappears behind a more link. The counter above checks your text against platform-specific limits in real time, including emojis, hashtags, mentions, URLs, words, and remaining characters.
2026 Reference
Social media character limits included
Use these numbers as a practical publishing checklist. The hard limit is the maximum a platform accepts. The displayed limit is the part users often see before the post expands.
| Platform and field | Hard limit | Shown before more | What to watch |
|---|---|---|---|
| Instagram Caption | 2,200 | ~125 chars | Caption text, hashtags, mentions, and line breaks. Keep the hook in the first line. |
| Instagram Bio | 150 | All shown | Short profile bio field. Make the audience, promise, and CTA clear. |
| TikTok Caption | 2,200 | ~1 line | Official Content Posting API safe limit. Hashtags and mentions count inside the caption. |
| X Standard Post | 280 | All shown | Standard public post limit. URLs are estimated with X style shortened link counting. |
| X Premium Long Post | 25,000 | ~280 chars | Long post ceiling for Premium accounts. The first 280 characters still carry the hook. |
| X Bio | 160 | All shown | Profile bio limit. Keep it direct and searchable. |
| LinkedIn Post | 3,000 | ~210 chars | Organic post limit. Put the professional takeaway early. |
| LinkedIn Headline | 220 | All shown | Profile headline limit. Useful for positioning and search visibility. |
| LinkedIn Article | ~125,000 | Article preview varies | Long-form article content. Structure with headings for readability. |
| YouTube Title | 100 | ~70 chars | Video title limit. Put the main keyword and benefit near the start. |
| YouTube Description | 5,000 | ~157 chars | Full description field. Use early summary text, links, chapters, and resources. |
| Facebook Post | 63,206 | ~477 chars | Very high hard limit, but shorter opening copy usually performs better. |
| Threads Post | 500 | All shown | Short social post limit for concise updates and conversations. |
| Bluesky Post | 300 | All shown | Short post limit. Keep links and hashtags intentional. |
Important TikTok note
The content file you provided mentioned a 4,000-character TikTok limit. I kept the tool at 2,200 because TikTok's official Content Posting API currently documents a 2,200 UTF-16 rune caption limit. That is the safer number for trust, SEO, and users who publish through tools or integrations.
Caption Strategy
Hard limit vs displayed limit
Most counters only show the maximum number. For real publishing, you also need to know what appears before a user taps more, expands a post, or sees a search preview.
The part people see first
This is the visible preview. Strong creators write the first line for attention, then use the rest for context, links, and hashtags.
Why counts differ
How platform character counting works
Different platforms can count the same caption differently. Emojis may be counted by visible characters or UTF-16 units, URLs may be shortened, and hashtags or mentions can trigger separate rules. That is why this tool uses platform modes instead of one generic character counter.
EmojisSome emojis contain multiple code points.
URLsX applies shortened-link style counting.
HashtagsThey count as text and can have separate limits.
Line breaksThey improve readability but still count.
Platform Guides
Caption limits and writing tips by platform
Each platform has a different job. Use the same core message, then adjust the opening hook, length, hashtags, and formatting for the place you are posting.
IG
Instagram caption and bio counter
2,200 caption / 150 bioInstagram gives you room for storytelling, but most people see only the opening line before they tap more. Use the counter to keep your hook, hashtags, and mentions under control before posting.
30 hashtags max
20 mentions max
First line matters
Best use: write a strong first sentence, add spacing for readability, then keep hashtags relevant instead of stuffing the caption.
TT
TikTok caption counter
2,200 safe API limitTikTok captions support search discovery, but the video remains the main asset. This tool uses the official Content Posting API limit so creators have a safe publishing number.
UTF-16 counting
Hashtags count
Mentions count
Best use: include the main keyword naturally, keep the first phrase clear, and avoid repeating hashtags only for length.
X
X / Twitter character counter
280 standard / 25,000 PremiumX is strict for standard posts and more flexible for Premium long posts. URLs are counted with a shortened-link estimate because X applies its own link rules.
280 standard
23-char URL estimate
25,000 Premium
Best use: make the first 280 characters work as a complete idea, even when writing a longer Premium post.
in
LinkedIn post counter
3,000 post / 220 headlineLinkedIn rewards clear professional ideas. The post limit is generous, but the visible opening lines decide whether someone expands the post.
3,000 post limit
220 headline
Short paragraphs help
Best use: start with the problem or result, keep paragraphs short, and end with one focused takeaway or question.
YT
YouTube title and description counter
100 title / 5,000 descriptionYouTube titles need to stay clear in search and suggested video surfaces. Descriptions can be longer, but the early lines should summarize the value quickly.
100 title chars
5,000 description chars
Search preview matters
Best use: put the main keyword and promise early, then use the description for links, timestamps, and supporting context.
Better Captions
Caption length sweet spots
The best length depends on the platform and the goal. These rules keep your post readable while still giving search engines and platform algorithms enough context.
InstagramLead with the hook in the first 125 characters, then use the body for story and context.
TikTokUse natural keywords and a clear phrase that matches what viewers might search.
XMake the first sentence strong enough to stand alone, especially for long posts.
LinkedInStart with the result, problem, or lesson before expanding the thought.
YouTubePut the keyword and value promise early in titles and descriptions.
Workflow
How to use this social media character counter
- Choose the platform mode for your post, caption, bio, title, or description.
- Paste or write your text in the counter box.
- Review the used count, remaining count, hashtags, mentions, URLs, words, and emoji count.
- Check the platform rules panel for limits that matter beyond the raw character number.
- Copy the cleaned caption and publish it with confidence.
Before You Publish
Caption quality checklist
- The first line clearly tells people why they should keep reading.
- The text fits the selected platform limit.
- Hashtags and mentions are useful, not stuffed.
- Links are checked, shortened where needed, and not repeated unnecessarily.
- Long posts use short paragraphs and clean line breaks.
- The call to action matches the platform and the post goal.
Limit Sources
Where the limits come from
Platform documentation can change, so the important public references are kept here for review.
FAQ
Social media character counter questions
What is the character limit for an Instagram caption in 2026?
Instagram captions can be up to 2,200 characters. Instagram also limits captions to 30 hashtags and 20 mentions, and the first line is the most important because long captions collapse behind more.
How many characters can a TikTok caption have?
This tool uses 2,200 as the safe TikTok caption limit because TikTok documents 2,200 UTF-16 runes in its official Content Posting API. Some app surfaces and third-party references may vary, but 2,200 is the safest verified publishing limit.
Why does my caption show a different character count on different platforms?
Platforms do not always count text the same way. Emojis, combined characters, URLs, line breaks, hashtags, and mentions can affect the final count, and X applies its own shortened-link counting rules.
Do hashtags and mentions count toward the character limit?
Yes. Hashtags, mentions, spaces, line breaks, and most visible symbols count toward the platform limit. Instagram also has separate hashtag and mention limits that this tool tracks.
What is the ideal caption length for engagement?
The maximum limit is not always the best target. Use the limit as a ceiling, then keep the opening hook short, make the value clear, and only use extra length when it improves context or search visibility.
Is this social media character counter free?
Yes. The counter is free to use, works in the browser, and does not require sign-up. It is built for creators, marketers, social media managers, and website owners who need quick caption checks.