Password strength checker.

[gordonrussell]

Gives you hints to increase password strength ...... and you can play around at potential passwords at your leisure ....... rather than the 'in your face' choose password now
https://www.passwordmeter.com/

[major.tom]

Here's an interesting take on passwords that helps explain things for the less technical folks out there.

https://www.grc.com/haystack.htm

[faceless]

Good stuff, cheers for both links

According to it I seem quite safe - "Massive Cracking Array Scenario - 1.65 hundred centuries"