The tool automatically calculates pass­word entropy. Pass­word entropy indicates how easy it is for a pass­word cracking soft­ware to guess a pass­word. The more pass­words the soft­ware has to try before guessing the pass­word the higher the entropy is. The calculation is an assessment of how difficult it is to crack the pass­word with methods commonly used by hackers. These include brute force cracking and dictionary attacks. Based on the mathematical result, the tool defines pass­word strength as weak, medium, strong, or super strong. The stronger the pass­word is, the longer it takes for hackers to get the right result using programs that test even millions of alternatives in a second. Theoretically, it’s possible to crack any pass­word. However, with a strong enough pass­word it could still take millions of years.