The Complete Social Media Character Limit Guide (2026) — Every Platform, Every Field
If you write content for social media, you have hit a character limit at the worst possible moment. A caption that gets cut off. A bio that will not save. An ad headline that exceeds the limit by one word.
This guide fixes that permanently.
We have compiled every social media character limit for every major platform in 2026 — not just the headline numbers, but every field on every platform: posts, bios, usernames, comments, ads, stories, and more. Updated for 2026, verified across multiple sources, and organised so you can find exactly what you need in seconds.
Bookmark this page. It is the only reference you will ever need.
Master Comparison Table: Social Media Character Limits 2026
| Platform | Post / Caption | Bio | Username | Comment |
|---|---|---|---|---|
| Twitter / X (Free) | 280 | 160 | 15 | 280 |
| Twitter / X (Premium) | 25,000 | 160 | 15 | 25,000 |
| 2,200 | 150 | 30 | 2,200 | |
| 63,206 | 101 (personal) / 255 (page) | 75 | 8,000 | |
| 3,000 | 2,600 | 60 | 1,250 | |
| TikTok | 4,000 | 80 | 24 | 150 |
| YouTube | 5,000 (description) | 1,000 | 20 | 10,000 |
| 500 (pin desc) | 160 | 30 | N/A | |
| Threads | 500 | 150 | 30 | 500 |
| Snapchat | 250 (story) | 80 | 15 | N/A |
| 40,000 (post) | 200 | 20 | 10,000 | |
| Discord (Free) | 2,000 | 190 | 32 | 2,000 |
| Discord (Nitro) | 4,000 | 190 | 32 | 4,000 |
| 65,536 (message) | 139 | N/A | N/A | |
| Telegram | 4,096 | 70 | 32 | 4,096 |
| Bluesky | 300 | 256 | 18 | 300 |
| Mastodon | 500 | 500 | 30 | 500 |
Why Social Media Character Limits Matter
Character limits are not just technical constraints — they shape how we communicate, what we say, and whether our message gets seen at all.
Truncation kills your message. Most platforms show only a fraction of your content before adding a “see more” button. On Instagram, that is 125 characters. On LinkedIn, it is 210. On TikTok, it is 100–150. Everything past that threshold requires an extra tap — and most users never tap.
Ad limits cost real money. A Facebook ad primary text truncated at 125 characters means your offer never reached your audience. A Google ad headline over 30 characters gets cut off mid-word in search results.
Algorithms respond to completion. Content that fits cleanly within visible limits — without the “more” button — tends to generate higher engagement because the full message is immediately readable.
Knowing the limits lets you write with intention. When you know you have 125 visible characters on Instagram, you stop burying your hook. When you know LinkedIn shows 210 characters before truncation, you put your most compelling sentence first.
Twitter / X Character Limit
Complete Twitter / X Limits (2026)
| Field | Character Limit |
|---|---|
| Post (Free tier) | 280 characters |
| Post (X Premium) | 25,000 characters |
| Bio | 160 characters |
| Display name | 50 characters |
| Username (@handle) | 15 characters |
| Direct Message | 10,000 characters |
| Community post | 280 characters |
Key Twitter / X character rules
URLs always count as 23 characters regardless of their actual length. A short link and a 200-character URL both consume exactly 23 characters.
Emojis count as 2 characters on Twitter. This catches many users off guard — a tweet with several emojis can hit the limit faster than expected.
Images, videos, and GIFs do not count toward the character limit.
X Premium subscribers get 25,000 characters per post, though the first 280 characters show in the feed — everything beyond that sits behind a “show more” prompt.
What 280 characters looks like in practice
280 characters is roughly 40–50 words — enough for a complete thought, a question, a short list, or a strong opinion. Twitter’s limit is not a restriction so much as a discipline: it forces every word to earn its place.
Instagram Character Limit
Complete Instagram Limits (2026)
| Field | Character Limit | Visible Without Tap |
|---|---|---|
| Caption | 2,200 characters | ~125 characters |
| Bio | 150 characters | Full bio shown |
| Display name | 30 characters | Full name shown |
| Username | 30 characters | Full username shown |
| Comment | 2,200 characters | Full comment shown |
| Hashtags per post | 30 maximum | Counted in caption |
| Story text overlay | ~200 characters readable | Full overlay shown |
| Alt text (images) | 100 characters | Not visible to users |
The 125-character rule
Only approximately 125 characters of your Instagram caption are visible in the feed before the “more” link appears. This is the most important number in Instagram content strategy.
Your first 125 characters should contain:
- Your hook or most compelling statement
- The core value of the post
- Ideally, a reason to keep reading
Everything after 125 characters is supporting content — context, hashtags, calls to action — that engaged readers will see after tapping.
Instagram bio strategy
With 150 characters, your bio needs to communicate four things: who you are, what you post, who it is for, and what to do next. Use line breaks (drafted outside the app and pasted in) to create visual structure within those 150 characters.
Facebook Character Limit
Complete Facebook Limits (2026)
| Field | Character Limit | Visible in Feed |
|---|---|---|
| Personal post | 63,206 characters | ~480 characters |
| Page post | 63,206 characters | ~480 characters |
| Comment | 8,000 characters | Full shown |
| Personal bio | 101 characters | Full shown |
| Page short description | 255 characters | Full shown |
| Group description | 3,000 characters | Partial |
| Event description | 64,000 characters | Partial |
| Ad primary text | 2,200 characters | ~125 visible |
| Ad headline | 40 characters | Full shown |
| Ad link description | 30 characters | Full shown |
| Carousel ad headline | 40 characters | Full shown |
| Story ad text | 90 characters recommended | Full shown |
| Messenger message | 20,000 characters | Full shown |
Facebook post length strategy
The technical limit of 63,206 characters is essentially unlimited for practical purposes. What matters is what Facebook’s algorithm and users respond to.
Posts under 80 characters consistently generate the highest engagement on personal profiles. Page posts perform well in the 100–250 character range. Long-form posts (500+) work when the content genuinely earns the length — stories, case studies, detailed updates.
Facebook Ads: the 125-character threshold
For advertisers, 125 characters is the most critical number on Facebook. This is how much primary text is visible in the feed before the “See More” link. Your entire offer, benefit, and hook must land within those 125 characters.
LinkedIn Character Limit
Complete LinkedIn Limits (2026)
| Field | Character Limit | Visible in Feed |
|---|---|---|
| Feed post | 3,000 characters | ~210 characters |
| Article | 125,000 characters | Full on article page |
| Article title | 150 characters | Full shown |
| Headline | 220 characters | Full shown |
| About / Bio section | 2,600 characters | ~300 visible |
| Comment | 1,250 characters | Full shown |
| Connection request | 300 characters | Full shown |
| Company page description | 2,000 characters | Partial |
| InMail subject | 200 characters | Full shown |
| InMail body | 1,900 characters | Full shown |
LinkedIn’s 210-character rule
LinkedIn truncates feed posts after approximately 210 characters — the shortest visible preview of any major professional platform. This makes the opening two sentences of every LinkedIn post critically important.
The posts that perform best on LinkedIn front-load a pattern interrupt or bold statement in the first line, then break immediately — creating visual space that makes the “see more” tap feel worthwhile.
LinkedIn headline as an SEO field
Your LinkedIn headline (220 characters) is indexed by both LinkedIn’s internal search and Google. Including your professional keywords here — your role, niche, and specialisation — increases your discoverability to recruiters, clients, and collaborators searching for those terms.
TikTok Character Limit
Complete TikTok Limits (2026)
| Field | Character Limit | Visible in Feed |
|---|---|---|
| Video caption | 4,000 characters | ~100–150 characters |
| Profile bio | 80 characters | Full shown |
| Username | 24 characters | Full shown |
| Display name | 30 characters | Full shown |
| Comment | 150 characters | Full shown |
| Hashtags per post | 30 maximum | Counted in caption |
TikTok’s search engine evolution
TikTok expanded its caption limit from 300 to 2,200 and then to 4,000 characters as it evolved into a search platform. By 2026, a significant portion of younger users use TikTok as their primary search engine for recommendations, tutorials, and local information.
This means longer, keyword-rich captions have measurable SEO value on TikTok — not just for engagement, but for appearing in TikTok search results for relevant queries.
Despite the 4,000-character limit, only 100–150 characters are visible before the “more” button. The opening lines of your caption are your hook — the rest is searchable context.
TikTok’s tightest limit: comments at 150 characters
TikTok comments are intentionally short at 150 characters — the tightest comment limit of any major platform. This shapes TikTok’s comment culture toward reactions, short responses, and emoji conversations rather than extended discussion.
YouTube Character Limit
Complete YouTube Limits (2026)
| Field | Character Limit | Visible Without Click |
|---|---|---|
| Video title | 100 characters | ~60–70 characters |
| Video description | 5,000 characters | ~157 characters |
| Comment | 10,000 characters | Full shown |
| Channel description | 1,000 characters | ~200 in search results |
| Tags (total) | 500 characters | Not visible to users |
| Community post | 5,000 characters | Partial |
| Playlist title | 150 characters | Full shown |
| Playlist description | 5,000 characters | Partial |
YouTube title optimisation
YouTube recommends keeping titles under 60–70 characters for full visibility across all placements — search results, suggested videos, mobile feeds, and browse features. Titles over 70 characters get truncated with an ellipsis.
Your primary keyword should appear in the first 5 words of your title. This is the highest-weight text field for YouTube search — it is to YouTube SEO what the title tag is to Google SEO.
YouTube description: 157 characters before the fold
Only approximately 157 characters of your video description are visible below the player before the “Show more” button appears. This is where your call to action, primary keyword, and most important link should live.
The remaining 4,843 characters of your description are indexed by YouTube and Google for search ranking — use them for full video transcripts, chapter markers, related links, and secondary keywords.
Pinterest Character Limit
Complete Pinterest Limits (2026)
| Field | Character Limit | Visible in Feed |
|---|---|---|
| Pin description | 500 characters | ~50–60 characters |
| Pin title | 100 characters | ~40 characters |
| Board name | 50 characters | ~30–35 characters |
| Board description | 500 characters | Not shown in feed |
| Profile bio | 160 characters | Full shown |
| Username | 30 characters | Full shown |
| Display name | 30 characters | Full shown |
| Hashtags per pin | 20 maximum | Counted in description |
| Alt text | 500 characters | Not visible to users |
Pinterest is a search engine — write accordingly
Pinterest is fundamentally different from every other platform in this guide. It is a visual search engine — not a social network. Character limits here serve SEO, not social engagement.
Your pin title and description are the primary signals Pinterest uses to match your content to search queries. Keywords placed naturally in your title (especially in the first 5 words) and description significantly impact how many people discover your pins.
Only 50–60 characters of your pin description are visible in the feed — but the remaining 440 characters are fully indexed for search. Write the visible section as a hook and the rest as keyword-rich context.
Threads Character Limit
Complete Threads Limits (2026)
| Field | Character Limit |
|---|---|
| Post | 500 characters |
| Reply | 500 characters |
| Bio | 150 characters |
| Username | 30 characters |
| Links per post | Up to 10 |
Threads positioning in 2026
Threads launched in July 2023 as Meta’s Twitter/X alternative and has grown into a genuine text-first platform for creators, journalists, and brands. Its 500-character limit positions it comfortably between Twitter’s tight 280 and LinkedIn’s generous 3,000.
Threads is connected to Instagram — your username and bio are shared across both platforms. Any changes to your Instagram bio automatically update your Threads bio.
Snapchat Character Limit
Complete Snapchat Limits (2026)
| Field | Character Limit |
|---|---|
| Snap caption | 80 characters |
| Story caption | 250 characters |
| Bio | 80 characters |
| Username | 15 characters |
| Display name | 30 characters |
| Chat message | No strict limit |
Snapchat’s ultra-tight limits
Snapchat operates with some of the tightest text limits of any platform — reflecting its identity as a visual-first, ephemeral medium. The 80-character snap caption enforces extreme brevity: one sharp, punchy line per image or video.
Reddit Character Limit
Complete Reddit Limits (2026)
| Field | Character Limit |
|---|---|
| Post title | 300 characters |
| Text post body | 40,000 characters |
| Comment | 10,000 characters |
| Username | 20 characters |
| Subreddit name | 21 characters |
| User flair | 64 characters |
| Community description | 500 characters |
| Community sidebar | 10,240 characters |
Reddit’s 300-character title limit
Reddit post titles are limited to 300 characters — more generous than most platforms. However, the most successful Reddit titles tend to be significantly shorter: clear, specific, and either informative or curiosity-driven.
Reddit’s culture rewards substance. The title gets you the click; the content earns the upvotes.
Discord Character Limit
Complete Discord Limits (2026)
| Field | Free | Nitro |
|---|---|---|
| Message | 2,000 characters | 4,000 characters |
| Bio / About me | 190 characters | 190 characters |
| Username | 32 characters | 32 characters |
| Server name | 100 characters | 100 characters |
| Channel name | 100 characters | 100 characters |
| Channel topic | 1,024 characters | 1,024 characters |
| Nickname | 32 characters | 32 characters |
| Role name | 100 characters | 100 characters |
WhatsApp Character Limit
Complete WhatsApp Limits (2026)
| Field | Character Limit |
|---|---|
| Message | 65,536 characters |
| Status update | 700 characters |
| Bio / About | 139 characters |
| Group name | 100 characters |
| Group description | 512 characters |
| Broadcast list name | 25 characters |
WhatsApp’s practical limits
WhatsApp’s 65,536-character message limit is so generous it is functionally unlimited for any personal or business communication use. The limit that actually matters for most users is the 700-character status update — WhatsApp’s version of a story caption.
Telegram Character Limit
Complete Telegram Limits (2026)
| Field | Character Limit |
|---|---|
| Message | 4,096 characters |
| Bio | 70 characters |
| Username | 32 characters |
| Group / Channel name | 255 characters |
| Group / Channel description | 255 characters |
| Caption (media) | 1,024 characters |
| Poll question | 255 characters |
Bluesky Character Limit
Complete Bluesky Limits (2026)
| Field | Character Limit |
|---|---|
| Post | 300 graphemes |
| Bio | 256 characters |
| Display name | 64 characters |
| Username / Handle | 18 characters |
| Alt text | 2,000 characters |
What is a grapheme?
Bluesky measures posts in graphemes rather than characters. A grapheme is what humans perceive as a single visual unit — a letter, an emoji, or a complex Unicode symbol. A single family emoji (👨👩👧👦) counts as 1 grapheme even though it is technically several unicode characters joined together.
In practice, for standard English text, 1 grapheme = 1 character. The distinction matters for emoji-heavy posts and non-Latin scripts.
Mastodon Character Limit
Complete Mastodon Limits (2026)
| Field | Character Limit |
|---|---|
| Post (default) | 500 characters |
| Bio | 500 characters |
| Display name | 30 characters |
| Content warning / Subject | 500 characters |
Important note: Mastodon is a decentralised platform where individual server instances can set their own character limits. The 500-character default is the most common, but some instances allow significantly more. Always check the specific instance you are using.
Character Limits That Catch People Off Guard
After covering 14 platforms in detail, here are the limits that most commonly surprise content creators and marketers:
TikTok comments: 150 characters The platform with the longest caption limit (4,000) has the shortest comment limit of any major platform.
LinkedIn visible preview: 210 characters LinkedIn posts can be 3,000 characters but only 210 show in the feed. Most LinkedIn users never see past the first two sentences.
Facebook ad primary text: 125 visible With an average CPC of $7+ in competitive niches, getting truncated before your offer lands is an expensive mistake.
Instagram bio: 150 characters Tighter than Twitter’s bio (160 characters) despite Instagram posts being significantly longer.
Pinterest pin description: 50–60 visible Despite a 500-character limit, your pin shows fewer visible characters in the feed than a tweet.
Telegram bio: 70 characters One of the tightest bio limits of any platform — less than half of Twitter’s 160.
How to Never Exceed a Character Limit Again
The only way to consistently stay within character limits across every platform is to count before you post.
Rather than counting in your head or pasting into a platform only to find your text is too long, use a dedicated character counter tool as part of your writing workflow:
- Write your caption, bio, or post in a character counter tool first
- Check the count against the platform’s limit (refer to the tables above)
- Adjust your text until it fits — both the full limit and the visible preview limit
- Copy and paste the final version directly into the platform
Use the TextCharacterCounter tool to count characters, words, sentences, and reading time in real time. The Social Media preset shows you exactly where you stand against the most common platform limits as you type — no manual checking required.
Social Media Character Limits: Quick Cheat Sheet
Print this or save it for your workflow:
Tightest limits (under 200 characters visible):
- Twitter/X: 280 (full post)
- TikTok comment: 150
- Instagram visible preview: ~125
- Snapchat caption: 80
- TikTok bio: 80
- Telegram bio: 70
Mid-range limits (200–500 characters):
- LinkedIn visible preview: ~210
- Threads post: 500
- Mastodon post: 500
- Pinterest description visible: ~50–60
- Reddit title: 300
- Bluesky post: 300
Generous limits (500+ characters):
- TikTok caption: 4,000
- YouTube description: 5,000
- Facebook post: 63,206
- WhatsApp message: 65,536
- LinkedIn article: 125,000
Frequently Asked Questions
What is the shortest character limit on social media?
TikTok’s comment limit of 150 characters is the shortest limit on any major social media platform in 2026. Snapchat’s snap caption (80 characters) and TikTok’s bio (80 characters) are the shortest bio and caption limits respectively.
Which social media platform has the highest character limit?
WhatsApp allows up to 65,536 characters per message — effectively unlimited for any practical communication. Among public-facing social platforms, Facebook posts allow up to 63,206 characters and LinkedIn articles allow up to 125,000 characters.
Do spaces count as characters on social media?
Yes. Spaces count as characters on every major social media platform — Twitter, Instagram, Facebook, LinkedIn, TikTok, YouTube, Pinterest, Threads, and all others covered in this guide.
Do emojis count as characters on social media?
Yes, but the count varies by platform. On Twitter/X, emojis count as 2 characters. On most other platforms including Instagram, TikTok, and Facebook, emojis count as 1–2 characters depending on the emoji’s complexity. On Pinterest, emojis count as 2 characters.
How many characters are visible before the see more button?
This varies significantly by platform: Instagram shows ~125 characters, LinkedIn shows ~210 characters, Facebook shows ~480 characters, TikTok shows ~100–150 characters, YouTube descriptions show ~157 characters, and Pinterest pins show ~50–60 characters before truncation.
What is the best tool to check social media character counts?
Use a real-time character counter tool that includes social media presets so you can check your text against each platform’s specific limit as you write. TextCharacterCounter.com counts characters, words, sentences, and reading time instantly — no sign-up required and your text never leaves your browser.