This question already has an answer here:
Many people wil often brag about the length of their password, like "yeah nobody is ever going to crack my password cause its 22 characters long." I was thinking, if you knew the exact length of their password, you could essentially lower the space and calculations necessary to brute force their password. My question is, does anyone know by how much does it reduce?
If I KNOW that a password is 22 characters in length, obviously you are not going to try any potential password that is not 22 characters in length.
tl;dr How much faster is it to crack a password if you know the exact char length?