📚 Writing Guide
Social Media Character Limits
The complete 2026 reference for every platform's text limits
Platform-by-Platform Limits
| Platform | Post Type | Character Limit |
|---|---|---|
| Twitter / X | Tweet (free) | 280 characters |
| Twitter / X | Tweet (Premium) | 25,000 characters |
| Twitter / X | Bio | 160 characters |
| Twitter / X | DM | 10,000 characters |
| Caption | 2,200 characters | |
| Bio | 150 characters | |
| Comment | 2,200 characters | |
| Hashtags | 30 per post | |
| Post | 63,206 characters | |
| Comment | 8,000 characters | |
| Ad headline | 40 characters | |
| Ad primary text | 125 characters | |
| Post | 3,000 characters | |
| Article | 125,000 characters | |
| Headline | 220 characters | |
| Summary/About | 2,600 characters | |
| TikTok | Caption | 2,200 characters |
| TikTok | Bio | 80 characters |
| YouTube | Title | 100 characters |
| YouTube | Description | 5,000 characters |
| Pin title | 100 characters | |
| Pin description | 500 characters | |
| Threads | Post | 500 characters |
| Google Business | Post | 1,500 characters |
| Google Ads | Headline | 30 characters |
| Google Ads | Description | 90 characters |
Optimal Lengths vs. Maximum Limits
Just because a platform allows a certain length doesn't mean you should use it all. Research on engagement shows these optimal lengths:
- Twitter/X: 71–100 characters gets the most engagement (even though 280 is allowed)
- Instagram: First 125 characters are visible before "more" — front-load your hook
- Facebook: Posts under 80 characters get 66% more engagement than longer posts
- LinkedIn: Posts between 1,200–1,600 characters perform best; articles of 1,900–2,000 words get the most views
- YouTube titles: 60–70 characters to avoid truncation in search results
- Email subject lines: 41 characters / 7 words optimal for open rates
Use our social media counter to check your text against these limits before posting.
Frequently Asked Questions
What is the Twitter character limit in 2026?
Free Twitter/X accounts have a 280-character limit per tweet. Premium subscribers can post up to 25,000 characters. Direct messages allow up to 10,000 characters. Bios are limited to 160 characters.
What is the Instagram caption limit?
Instagram captions can be up to 2,200 characters, but only the first 125 characters are visible before users tap 'more.' Front-load your most important content and call-to-action in those first 125 characters.
How long should a LinkedIn post be?
LinkedIn posts can be up to 3,000 characters, but posts between 1,200–1,600 characters tend to get the highest engagement. For LinkedIn articles, 1,900–2,000 words is the optimal length for views and shares.
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