A LinkedIn post can be up to 3,000 characters. Paste yours above. The LinkedIn post row starts at 3,000 and drops by one for every letter, space and emoji. The words and lines counts sit beside it. If the post runs over, LinkedIn suggests writing an article instead.
What this counter doesn't show
It doesn't mark where LinkedIn cuts a post off behind see more, so it can't tell you how much of your opening shows in the feed. It counts plain characters. If a post with emoji or lots of line breaks is right at the limit, check it in LinkedIn's own post box before you share it.
The preset row only covers posts. Headlines, the About section and comments have their own limits, so check those in LinkedIn's own edit box.
This character counter is free with no signup. SearchBlueprint, who make it, sell SEO planning for websites: which searches each page should answer.