Paste your caption once and see it counted against every platform’s limit — plus the length that actually performs. No sign-up.
Quick answer Social media character limits in 2026 are 280 on X (Twitter), 500 on Threads, 2,200 on Instagram and TikTok, 3,000 on LinkedIn, 5,000 on YouTube, and 63,206 on Facebook. For engagement, aim well under the limit — the counter below shows each platform’s ideal length.
The limit is the hard ceiling each platform enforces. The ideal length is the engagement sweet-spot — the range that tends to perform best, drawn from the same per-platform rules our AI writer uses inside PersonaXpand. Hitting the limit is rarely the goal; hitting the sweet-spot is.
| Platform | Character limit | Ideal length | Hashtags |
|---|---|---|---|
| X / Twitter | 280 | ≤ 240 — front-load the hook | 1–2 |
| 2,200 | 80–150 characters | up to 11 | |
| 3,000 | 700–1,200 characters | 3–5 | |
| Threads | 500 | 280–400 — one paragraph | 0–1 |
| 63,206 | 300–500 (text-only) | 1–2 | |
| TikTok | 2,200 | ≤ 150 — keep the hook visible | 3–5 |
| YouTube | 5,000 | keywords in the first 150 | 3–5 |
Limits reflect what PersonaXpand enforces when it publishes to each platform. Ideal ranges are guidance, not hard caps — a strong post can run longer.
Every platform truncates. Instagram hides everything after the first ~125 characters behind “more.” Facebook and LinkedIn collapse long posts behind “See more.” X shows one dense block. Writing to the ceiling buries your hook; writing to the sweet-spot keeps it visible — which is where reads, replies and reach come from.
Great posts rarely fit every network at the same length. A 1,000-character LinkedIn post is far too long for X and a touch long for Threads. That’s the whole idea behind PersonaXpand — write once, and it’s reshaped to the right length, tone and format for each platform, then auto-published on your schedule.
PersonaXpand writes each post to the ideal length for every platform, replies in your voice, and publishes on schedule — free to start, no credit card.
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