500 characters per post. Spaces, line breaks and emojis all count.
Free tool by Mydrop, no signup
Free Threads character counter
Threads allows 500 characters and one topic tag per post.
Hashtags 0Mentions 0Emojis 0Words 0Lines 0
Threads counts every letter, space, emoji and line break as 1.
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How Threads counts
500 characters per post
Threads stops a post at 500 characters, spaces, line breaks and emojis included.
One topic tag
Threads uses a single tag as the post's topic, so pick the one that matches the conversation you want to join.
Longer? Make it a thread
Split a long post into several connected posts instead of cutting the idea short.
Example: “Hot take: most brands post too much on Threads. Quality over volume.” = 68 characters on Threads
Limits checked on October 10, 2026, against each network's rules and the limits Mydrop's editor enforces.
Mydrop data
How long should a caption be? Past 80 characters, it barely matters.
We measured 4,848 posts on 336 accounts connected to Mydrop, over 180 days to September 2026. Each post is scored against its own account's median, so a global brand and a local shop compare fairly.
- Captions under 80 characters earned 9% less engagement than the account's typical post.
- Captions of 80 to 150 characters did best, 3% above.
- From 150 to 600+ characters, length moved engagement by 1% or less.
Reference
Every character limit in one table
The limits Mydrop checks before it publishes a post, network by network.
| Network | Character limit | Seen before "more" | Hashtags | How it counts |
|---|---|---|---|---|
| 2,200 | About 125 | 5 per post | 1 per character | |
| TikTok | 2,200 via the API (4,000 typed in the app) | Varies | Inside the limit | Emoji = 2 |
| 3,000 | About 210 (140 on phones) | Inside the limit | 1 per character | |
| X | 280 (longer with Premium) | Full post shown | Inside the limit | Emoji = 2, link = 23 |
| 63,206 (Reels: 2,200) | Varies | Inside the limit | 1 per character | |
| Threads | 500 | Full post shown | 1 topic tag | 1 per character |
| Bluesky | 300 | Full post shown | Inside the limit | 1 per character |
| YouTube | 5,000 (description; title 100) | First lines | First 3 show above the title | 1 per character |
| 800 via the API (500 in Pinterest's editor) | Varies | Inside the limit | 1 per character | |
| Google Business Profile | 1,500 | Varies | Not used | 1 per character |
Where the "more" cut lands depends on the screen and the line breaks, so treat those figures as a guide. The character limits are hard limits: the network refuses anything longer.
Write it, check it, post it
This counter is built into Mydrop
In Mydrop's editor every caption is counted per network as you type. When one network owns the limit, the editor names it and gives that network its own version in one click.
Free plan, then $19 a month flat. Never per seat.
Questions
Character limits, answered
One topic tag per post. Threads turns a single tag into the post's topic.
Split it into a thread of several posts, or trim it. Mydrop's editor flags the limit and lets you give Threads its own shorter version.
Yes. Most emojis count as 1 on Instagram, LinkedIn and Facebook, but combined emojis (skin tones, families) count as several. TikTok and X count most emojis as 2. Switch network above to see each rule.
Yes. No signup, no limit, and your text never leaves your browser.
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