Social Media Character Counter
One text, every platform limit at once — X, Instagram, TikTok, YouTube and LinkedIn, with hashtag count and overflow warnings.
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| Platform | Limit | Remaining | |
|---|---|---|---|
| X / Twitter | 280 | — | — |
| Instagram Caption | 2,200 | — | — |
| Instagram Bio | 150 | — | — |
| TikTok | 2,200 | — | — |
| YouTube Title | 100 | — | — |
| YouTube Caption | 5,000 | — | — |
| 3,000 | — | — |
How It Works
Every platform enforces its own character ceiling, and those ceilings are real, specific and change more often than people expect: X moved from 140 to 280 characters in 2017 — literally doubling overnight after years at the original limit — Instagram's bio field is capped at 150, and LinkedIn's post limit sits far higher at 3,000. This tool checks one pasted text against all of them simultaneously: green means it fits, red shows the exact overage in characters so there's no guessing or manual counting per platform.
Concrete example: paste a 320-character product announcement. It shows green for LinkedIn (well under 3,000), green for Instagram's 2,200-character caption limit, but red for X — 40 characters over the 280 ceiling — with the exact overage highlighted so you know precisely what to trim rather than cutting blindly and re-checking by hand.
Things to Know
- Limit overflow is handled differently by each platform: some reject the post outright until it fits (X), others auto-truncate the visible text and add a "...see more" link (Instagram, LinkedIn, Facebook) — meaning your carefully written ending may simply never be read.
- Invisible limits often matter more than the hard ceiling: Instagram folds captions behind "more" around 125 characters, LinkedIn around 210, and X shows the full 280 but engagement measurably drops past roughly 100 — so the opening line, not the character cap, is what earns attention.
- Platform limits change over time: X's 280-character cap replaced a 140-character limit that had held since the platform launched in 2006, so a rule memorized once can go stale — this tool is kept current rather than relying on a number from memory.
- Hashtags count against the caption limit too on most platforms, and Instagram separately caps hashtags at 30 per post regardless of overall character count.
Frequently Asked Questions
Do emojis count as one character?
Platforms generally count user-perceived characters, but some emoji are multi-unit under the hood; X counts most emoji as 2. Leave a few characters of headroom when an emoji sits near the limit.
Do links eat characters on X?
Every URL is wrapped to a fixed 23 characters regardless of its real length — budget 23 + a space per link.
What happens if my post is too long?
It depends on the platform. X refuses to publish until the text fits under 280 characters. Instagram, LinkedIn and Facebook instead publish the full text but visually truncate it behind a "...see more" link — so an over-limit post still exists, it just may not get fully read.
Has the X/Twitter character limit changed over time?
Yes — it launched at 140 characters in 2006 and doubled to 280 in 2017 after testing showed the extra room reduced the need to abbreviate words or split a thought into extra tweets. Rules like this are exactly why a live checker beats a memorized number.
Does the counter account for hashtags separately?
Yes — hashtags are shown as their own count alongside the main text, since Instagram enforces a hard cap of 30 hashtags per post independent of the 2,200-character caption limit, and going over that cap can get a post suppressed rather than just trimmed.
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