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
Your files and text stay in your browser while you use this tool, and ads or anonymous visit statistics do not receive them. Only your favorites and recent tools are saved on your device. Privacy policy
Want proof? Check it with your browser’s Network tab: How to check that a tool does not upload your files
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.
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