Social media character counter
Shortest limit: X, 280 characters·Longest limit: Facebook, 63,206 characters·Networks covered: Nine
The limit is rarely the real constraint
Every network folds a caption long before its ceiling. Instagram at about 125 characters, LinkedIn at about 210, Facebook at about 480. The number that decides whether your post is read is the fold, not the limit.
One caption for every network is usually a compromise
Threads takes 500 characters and Instagram takes 2,200. Writing once for both means writing for the shorter one, which is why the counter shows all of them together rather than one at a time.
Echoia does the rest: publishing to ten networks, every comment and message in one inbox. Free for three accounts.