[TIP] Password Entropy Calculator

[nlinecomputers]

Password Entropy Calculator

This password entropy calculator can compute how strong your password is.

www.omnicalculator.com

With the LastPass breach, there has been lots of talk about how strong your Master Password is. This site lets you calculate how much entropy your Master Password has and you don't have to input your master password into the site(a bad idea!) to figure it out. You need to count for yourself the amount of each type of character to figure out the number of bits of Entropy. My password is at 131 bits.

 

[britechguy]

91.76, which gets this after the value, "Your password is...very strong. Excellent job! " Even my weakest ones for accounts are above 70.

And they're all dirt simple for me to remember, but I doubt anyone else would guess any for a very, very long time.

 

[xrobwx71]

111.43

 

[Larry Sabo]

117.98

 

[seashore]

And my usual simple phrase as discussed in a prior thread:
thisismyverysafeunguessablepassword
164.5 extremely strong
Please don't share my password with anyone.

 

[nlinecomputers]

And my usual simple phrase as discussed in a prior thread:
thisismyverysafeunguessablepassword
164.5 extremely strong
Please don't share my password with anyone.

The problem of course is that my link does NOT consider words as a single bit of entropy. If using a dictionary each word is a single bit but the pool of "characters" is the size of the dictionary used to attack your password. That's harder to compute but probably still a good size. I would bet it's lower than 165.

 

[britechguy]

I would bet it's lower than 165.

But way, way, way stronger than many passwords in use. Length alone is the very easiest way to increase password strength.

 

[GTP]

314.6 Bits

"extremaly strong. A bit overkill, really! "

(48 characters in all my passwords.)

 

[britechguy]

48 characters in all my passwords.

A bit, you say? . . .

But, if you're willing to type 'em, or cut and paste 'em . . .

 

[GTP]

A bit, you say? . .

Thats what the calculator said about my passwords.