TL;DR: Social media character limits in 2026 range from 280 characters for a standard X post to thousands for captions and descriptions on other platforms. A hard limit stops publishing, while truncation only hides part of the text in the feed. Draft the strongest message first, count every character, and check the final version in the platform composer before posting.
Social media character limits can turn a finished post into a last-minute editing job. A caption may fit on Instagram but fail on X. A YouTube description may accept far more text than viewers see before expanding it. Spaces, links, hashtags, mentions and emoji can affect the final count.
This 2026 guide covers the main text fields on X, Instagram, Facebook, LinkedIn, Threads, TikTok and YouTube. It separates true publishing limits from preview limits, which change by device and placement. You will also learn how to prepare one idea for several networks without cutting its meaning. The goal is not to fill each field. It is to make every version fit and stay clear.
Platform rules can change without much notice. Treat these figures as a checked reference for July 2026, then confirm campaign copy in the live composer. Paste any draft into the online character counter to see the exact total before publishing.
What Are the Social Media Character Limits in 2026?
The main 2026 limits are 280 characters for a standard X post, 2,200 for an Instagram caption, 3,000 for a LinkedIn post and 500 for a Threads post. Other platforms allow much longer text, but the visible preview is usually far shorter than the publishing limit.
- X: 280 characters for a standard post. Premium subscribers can create posts up to 25,000 characters.
- Instagram: 2,200 characters for feed and Reel captions. Profile bios allow 150 characters.
- Facebook: regular posts commonly support up to 63,206 characters. The visible excerpt varies by placement.
- LinkedIn: 3,000 characters for a standard post. Articles use a separate, larger field.
- Threads: 500 characters for the main post. A text attachment can hold up to 10,000 characters.
- TikTok: many accounts allow captions up to 4,000 characters, while some accounts or tools still show 2,200.
- YouTube: 100 characters for a video title. Official API documentation sets descriptions at 5,000 bytes.
These are maximums, not writing targets. Shorter copy can be clearer and easier to scan. Use the word and character counter when both measures matter.
What Is the Difference Between a Hard Limit and Truncation?
A hard limit is the maximum text a platform accepts. Truncation is a display rule that hides part of an accepted post behind a prompt such as “more.” Your copy can publish successfully and still lose its hook because the key sentence appears after the visible preview.
Hard limits are usually stable inside one field. Preview length can change between desktop and mobile, feed and search, or after a redesign. That is why exact “characters before more” figures become outdated faster than publishing limits.
Write the first sentence so it works alone. Put the topic, benefit or key fact before background details. Use the readability checker to find long sentences that weaken the opening.
X, Instagram and Facebook Limits
X gives standard posts the tightest limit in this guide. Its 280-character cap includes spaces and punctuation. Premium long posts add room, but readers still see only an opening portion in the feed.
Instagram captions allow 2,200 characters, including hashtags and mentions. Use that space for useful context, but make the opening lines work by themselves. Bios allow 150 characters, so they should quickly explain who the account serves.
Facebook accepts far more text than most posts need. The feed preview matters more than the maximum. When copy comes from a document or AI assistant, use the extra spaces remover before counting it.
How Long Can LinkedIn, Threads and TikTok Posts Be?
LinkedIn posts allow 3,000 characters, Threads posts allow 500, and TikTok captions may allow up to 4,000 on current accounts. The same message should be edited for each audience instead of pasted unchanged across all three platforms.
LinkedIn supports detailed professional posts, but the useful point should stay near the top. Threads favors a compact main post, while its text attachment can carry a longer explanation.
TikTok limits can vary by account and publishing tool. Use the limit shown in your composer, and remember that hashtags, mentions and emoji share the same allowance. The hidden character detector can reveal invisible symbols copied from formatted text.
YouTube Titles and Descriptions
YouTube titles accept up to 100 characters. Official API documentation caps descriptions at 5,000 bytes. Plain English often behaves like a character count, but accented letters, emoji and non-Latin scripts can use more than one byte.
Important words can disappear when YouTube shortens titles on small screens. Put the topic early. Descriptions should begin with the core summary and useful links, then add chapters or supporting details.
Compare alternative versions with the Text Difference tool. You can confirm that a shorter title still keeps the topic, promise and key term.
How Do You Check Social Copy Before Publishing?
Start with one clear master draft, then create a version for each platform. Count the complete text after adding links, hashtags, mentions and emoji. Review the opening preview, clean hidden spacing, and paste the approved version into the live composer.
- Write one message: focus on one idea and one next action.
- Create platform versions: shorten for X and Threads, while keeping useful context elsewhere.
- Count the complete copy: include punctuation, spaces, hashtags, mentions and the call to action.
- Review the first lines: make sure the hook survives truncation.
- Clean pasted text: remove extra spaces and invisible characters.
- Check the composer: use the platform as the final authority.
Do not cut words at random. Remove repeated context, weak openings and unnecessary labels first. Keep the subject, useful detail and action. If the short version changes the meaning, split the idea into a thread, carousel or linked page.
Social media character limits are easier to manage when you separate maximum field size from visible preview length. Use the platform-specific limit, protect the first sentence, and check every final version instead of relying on one shared draft.
For your next post, paste the complete copy into the free Character Counter. Shorten it until the message fits, then confirm it in the platform composer. This two-step check prevents cut-off posts without forcing every network to use the same wording.