PC Magazine shares a new Password Strength Testing Tool from Gibson Research

GRC Password Testing Tool – make Haystack bigger to better hide the needle
http://securitywatch.pcmag.com/hacking/298891-how-to-make-strong-passwords-stronger

QUOTE: If your password is a common word or phrase, the bad guys won’t have any trouble guessing it. That’s just a fact of life. If you’ve taken care to use a seemingly random collection of various types of characters, the time to crack it by brute force totally depends on the size of the “search space.” Gibson Research’s “Haystack Calculator” will analyze your password and estimate the time needed to crack it.

GRC Password Strength Testing Tool
https://www.grc.com/haystack.htm