Character Count Limits on Every Social Media Platform (2026)
Nothing kills a social media post faster than hitting the character limit mid-sentence. Here's every major platform's limit, plus pro tips for staying within them.
Platform Character Limits
| Platform | Limit | What Counts |
|---|---|---|
| Twitter / X | 280 characters | All text (media links used to be free, now count) |
| Instagram (caption) | 2,200 characters | Caption text; hashtags count toward the limit |
| Instagram (bio) | 150 characters | Include links using the "Link in bio" format |
| LinkedIn (post) | 3,000 characters | Long-form posts; first ~150 chars visible before "see more" |
| LinkedIn (headline) | 220 characters | Keywords here help with LinkedIn search |
| Facebook (post) | 63,206 characters | First ~480 chars visible before "see more" |
| TikTok (caption) | 2,200 characters | Keep it short — TikTok is video-first |
| YouTube (description) | 5,000 characters | First 2-3 lines are visible; put key info there |
| SMS (text message) | 160 characters | Messages over 160 are split into segments |
Pro Tips for Each Platform
Twitter / X
Write your draft, then trim ruthlessly. Use a word counter to check. Pro tip: Write the core message in the first 100 characters — that's what shows in notifications and embeds.
The first 150 characters are critical — that's what people see before clicking "see more." Start with a strong hook. Use line breaks every 2-3 sentences for readability.
Hashtags count! If you use 30 hashtags at 20 characters each, that's 600 characters — over a quarter of your caption. Consider putting hashtags in the first comment instead.
Most users scroll past posts longer than 2-3 lines. Keep posts under 300 characters unless you're sharing a personal story. Use images and videos — they get 3x more engagement than text-only posts.
Track Your Count While Writing
Use our free Word Counter to check character counts (including the "with spaces" option — important for Twitter/X and SMS limits).
🔢 Check your character count: Word Counter Tool →
Character Limits by Platform (2026 Quick Sheet)
- X/Twitter - 280 characters (25,000 with Premium); the sweet spot is 100-180
- Facebook posts - 63,206 characters, but posts longer than ~80 characters get less reach; put detail in comments
- Instagram captions - 2,200 characters, with the first 125 visible before 'more'; put keywords first
- LinkedIn posts - 3,000 characters; the first ~210 show in the feed - hook early
- Threads - 500 characters per post
- TikTok captions - 2,200 characters, but only ~100 show before 'more'
- YouTube descriptions - 5,000 characters; the first 150-200 are the 'above the fold' text
- Email subjects - mobile shows ~40-50 characters; desktop ~60-70
- SMS - 160 characters per message segment (billing splits at 160/153 with GSM)
Why Limits Still Matter in the Video Era
Captions and descriptions are where search and discovery live: TikTok and YouTube search captions and descriptions, LinkedIn indexes posts, and X surfaces hashtags. Staying within limits is not censorship - it is design. Short text also performs better: posts under 100 characters on X historically get higher engagement per impression.
The One-Line Rule for Every Platform
- Put the keyword and the payoff in the first line
- Leave the actionable link in the bio or comments where allowed
- Rewrite per platform - do not paste the same text everywhere
- Count before you post: paste drafts into our Word Counter to check characters with and without spaces
Handling the 280-Character X Post
Write the message, cut every adjective, move the link to a reply or bio, then tighten again - a 280-character post should say one thing. Use line breaks for scannability (each line counts). Abbreviations are acceptable on X in a way they are not on LinkedIn or email.
A Practical Posting Workflow
- Write the draft in one tool (this guide, notes app, doc)
- Paste into the Word Counter to see characters with and without spaces
- Trim to the strictest platform (usually X at 280 or Threads at 500)
- Adapt per platform: shorten for X, expand for LinkedIn, front-load keywords for Instagram/TikTok
- Check the preview - the first visible line is your only guaranteed impression
Common Myths About Limits
- 'Longer posts rank better' - length helps only if it serves the reader; a padded post loses engagement
- 'Emoji save characters' - emoji count as characters (usually 1-2 each) and render differently per device
- 'Links are always punished' - a relevant link in the right place outperforms hiding it
- 'Hashtags are free' - they consume characters and dilute the message; use 2-5 relevant ones
Localization and Counting Pitfalls
- Emoji and CJK characters can count as 1-2 characters depending on platform encoding - verify with the platform's own counter
- LinkedIn and Facebook count URLs as full-length strings even when they display shortened
- Line breaks and spaces count toward limits on most platforms
- Some platforms count hashtags toward the limit but not the # symbol (X/Twitter)
When in doubt, paste into the Word Counter and compare with the platform counter - they rarely disagree for plain text.
Schedule a Weekly 15-Minute Social Block
Consistency beats perfection: plan a 15-minute slot, write 5 posts, adapt them per platform with the limits sheet above, and schedule. Track which posts overperform and repeat their structure. Character discipline is a skill - the more you trim, the sharper the message.