Post Length CheckerPaste one post and check it against typical character limits for X, Threads, Bluesky, Mastodon, LinkedIn, Instagram, Facebook and YouTube at once.
Bio Character Counter
Profile bios have tight, platform-specific limits. Pick a platform (or set your own limit) and write with a live counter. Characters are counted as visible symbols (grapheme clusters), so a flag or family emoji counts once — platforms may count some of these differently.
Limits are typical values checked in October 2026. Platforms change them without notice, so every limit here is editable.
0Characters
0Remaining
0UTF-16 units
0Lines
Runs entirely in your browser. Your input and files are not uploaded to any server.
How to use
- Choose a platform or enter a custom limit.
- Write your bio.
- Watch the remaining characters and copy the bio when it fits.
Examples
Instagram
A 150-character bio with three short lines and a link call-to-action.
LinkedIn headline
A role and value statement under the typical 220-character headline limit.
Privacy
Runs entirely in your browser. Your input and files are not uploaded to any server. See the privacy policy for what is stored in your browser (favorites and history only). Privacy policy
Check it yourself: open your browser’s developer tools, select the Network tab and use the tool. Your file never appears in an upload request. Once this page is saved for offline use, you can also disconnect from the internet and keep working. Ads and anonymous visit statistics, when enabled, make their own requests, but they never receive your files or text.
Frequently asked questions
Why does the platform count differently?
Some platforms count bytes or UTF-16 code units, so emoji can count as 2 or more. The tool shows both the visible count and the UTF-16 count to help you stay safe.
Are these limits official?
They are commonly documented values at the time of checking. Platforms change limits, so you can edit the number.
Related tools
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Open Graph PreviewPreview a link card from your og:title, og:description and og:image, check image size and text length, and copy the Open Graph tags.
Twitter / X Card PreviewPreview a summary or large-image card for X (Twitter), check text and image guidance, and generate the twitter: meta tags.