Check your post against every character limit at once
Paste your post once and see if it fits each network. Anything over the limit is marked, so you know what to cut.
Paste a caption, post, bio or title.
- Characters
- 0
- Words
- 0
- Lines
- 0
- Hashtags
- 0
- Mentions
- 0
- Links
- 0
Paste or type a post to see its counts.
| Network | Used | Left |
|---|---|---|
| 0 / 2,200 | 2,200 | |
| 0 / 150 | 150 | |
| 0 / 3,000 | 3,000 | |
| 0 / 2,200 | 2,200 | |
| 0 / 80 | 80 | |
| 0 / 500 | 500 | |
| 0 / 280 | 280 | |
| 0 / 25,000 | 25,000 | |
| 0 / 100 | 100 | |
| 0 / 5,000 | 5,000 | |
| Instagram hashtags | 0 / 5 | 5 |
| Threads links | 0 / 5 | 5 |
In Postmosis, every post you write shows its count for each network before you copy it out. See the post writer
Paste, check, trim
Paste your post
A caption, a post, a bio or a title. The counts update as you type.
Check each network
Each row shows what you've used and what's left. Red means you're over.
Trim what's marked
Pick a network to see the part past its limit. Cut it, or copy the part that fits.
What each network lets you post
Instagram caps hashtags too. Its Help Centre says you can use up to 5 on a post, so a sixth shows in red.
X counts its own way: every link counts as 23, however long it is, and the X rows count the same way.
Threads allows up to 5 links in a post.
Sources
- Meta for Developers: IG User Media, read 28 October 2026
- Instagram Help Centre: Add a bio to your Instagram profile, read 28 October 2026
- Instagram Help Centre: Use hashtags on Instagram, read 28 October 2026
- LinkedIn Help: Post and share updates, read 28 October 2026
- TikTok for Developers: Direct Post (caption limit), read 28 October 2026
- TikTok Support: bio length, read 28 October 2026
- Meta for Developers: Threads Posts, read 28 October 2026
- X Developer Platform: Counting characters, read 28 October 2026
- X Help Center: About different types of posts, read 28 October 2026
- YouTube Help: Edit video settings (title and description limits), read 28 October 2026
Worked examples
A long caption
A 2,250-character caption is 50 over Instagram's 2,200, and fits LinkedIn with 750 to spare.
A link on X
"See the listing", a long link and one emoji count 42 on X.
Six hashtags
Six hashtags show 6 / 5 on the Instagram hashtags row. Cut one and it fits.
Common questions
Start my weekWhat is the Instagram caption limit?
2,200 characters.
What is the LinkedIn post limit?
3,000 characters.
How many characters can a post on X have?
280, or up to 25,000 for subscribers' longer posts. X used to be called Twitter.
Do emoji count as one character?
Not everywhere. X counts most emoji as 2 and Threads as 4. The counter errs on the long side, so if it says a post fits, it fits.
Do spaces and line breaks count?
Yes, on every network here.
Is my text saved anywhere?
No. It stays in your browser.
More free tools
Instagram line break generator
Keep the blank lines in your Instagram caption.
LinkedIn text formatter
Bold, italic and bullet points for LinkedIn posts.
Hook generator
Turn one topic into first lines you can post.
Get next week's posts made
See the price, start, and make your first posts this week.