None. There is no consistency between them, which means their criteria must be examined to determine their value. Their criteria are never disclosed, so it is impossible to assess their value. So, I would ignore them. Also, some of those sites have been known to harvest passwords in the past. I would never provide a password that I use (or would consider using) to these sites. Answer from ohfucknotthisagain on reddit.com
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PasswordMonster
passwordmonster.com β€Ί home
Password Strength Meter
March 3, 2022 - How strong are your passwords? Test how secure they are using the My1Login Password Strength Test.
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Security.org
security.org β€Ί home β€Ί how secure is my password? | password strength checker
How Secure Is My Password? | Password Strength Checker | Security.org
October 14, 2020 - Check how secure your password is using our free online tool. How long would it take a supercomputer to crack your password?
Discussions

is passwordmonster.com safe
Never trust any website with your passwords More on reddit.com
🌐 r/Passwords
8
0
December 29, 2021
Is this a good website for checking your password strength?
Um, no. It's an absolutely horrible way to check your password strength. A site you have no reason to trust and which you have to allow to run its scripts in your browser now has your passwords. If you've ever used them anywhere, it would be trivial for them to connect them to you. Just do a short, 3-4 word phrase and mix in some capital letters and numbers. "shouldnottrust" to "sh0u1dNOTtrust", for example, is just as good against random attacks (nothing will protect you from a keylogger, clipboard monitor (if you use a password manager) or the target site being compromised) as a random string of gibberish would be and is a helluva lot easier to remember. More on reddit.com
🌐 r/privacy
13
5
June 5, 2017
Are password checkers safe?
If you're looking for a broad statement, then the answer is no. Don't trust random websites with your password. Otherwise it's a case by case. More on reddit.com
🌐 r/Passwords
19
5
July 7, 2020
How do you remember your master password without having to write it down?
Use a passphrase... Something long but a specific picture in your mind you can recall. https://xkcd.com/936 More on reddit.com
🌐 r/1Password
48
14
October 5, 2022
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Reddit
reddit.com β€Ί r/sysadmin β€Ί how much attention should one pay to those password strength meters?
r/sysadmin on Reddit: How much attention should one pay to those password strength meters?
March 25, 2023 -

So, I am looking at updating our password policy for my org and I know a lot of focus is on length over complexity nowadays, and I was trying to put together some helpful tips for users on choosing passphrases instead of passwords and I wanted to give them a resource to play with so they could see the difference and I saw some of these password strength meters mentioned, but they seem to throw vastly different results which I think as an end user would confuse me if I was really choosing a secure password.

For example, a phrase like "Ihaveareallybighouse!" is 21 characters with upper, lower, and special characters and https://www.security.org/how-secure-is-my-password/ says it would take "1 hundred quintillion years" to crack whereas passwordmonster.com says it would take 3 days lol.

I'm just wondering do you have any tools you trust to give to end users to help them make sure they are choosing good passwords?

🌐
Monster Password
monsterpassword.com
Monster Password | Password Strength Meter | Bulk Test πŸ”
Test your password strength instantly with Monster Password. Learn how to secure your password, and get bulk tips on creating strong, uncrackable passphrases.
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Delinea
delinea.com β€Ί home β€Ί password strength checker | how strong is my password?
Password Strength Checker | How strong is my password?
Use our secure password strength checker to test your password strength instantly. Can a computer easily hack your password? See your result in real time!
Find elsewhere
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YouTube
youtube.com β€Ί watch
How Strong is Your Password? - YouTube
How strong is your password?Help support the channel with a like, comment & subscribe!====Video Specific Resources====Password Monster: https://www.passwordm...
Published Β  May 8, 2023
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Avast
avast.com β€Ί random-password-generator
Random Password Generator | Create Strong Passwords
Generate secure passwords for your online accounts with our free random password generator. Create strong passwords, free!
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UIC
uic.edu β€Ί apps β€Ί strong-password
Password Meter - A visual assessment of password strengths and weaknesses
Refers to the total password length. Disclaimer: This application is designed to assess the strength of password strings. The instantaneous visual feedback provides the user a means to improve the strength of their passwords, with a hard focus on breaking the typical bad habits of faulty password ...
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Fandom
bandofmonsters.fandom.com β€Ί wiki β€Ί Monster_Passwords
Monster Passwords | Band of Monsters Wiki | Fandom
Monster passwords are a game mechanic that allow players to share their monsters with other people, through the use of unique codes. The codes are created from "Exporting" the monster as a code, and copying the code the game provides.
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Proton
proton.me β€Ί pass β€Ί password-generator
Password generator - Create strong, random passwords | Proton
Generate robust, random passwords effortlessly. Our password generator creates strong, secure passwords to safeguard your online accounts
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NordPass
nordpass.com β€Ί secure password
How Secure Is My Password? | NordPass
Hackers use a technique known as brute force, which is based on the idea of trying to blindly guess a user's passwords. It’s often a computer program that tries words until it hits the jackpot.
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Kaspersky
password.kaspersky.com
Password Checker & Secure Random Password Generator | Kaspersky
Check your password security and see if it can resist hackers. Use our random password generator to instantly create strong, unique passwords and stay protected.
🌐
AlgoMonster
algo.monster β€Ί liteproblems β€Ί 420
420. Strong Password Checker - In-Depth Explanation
In-depth solution and explanation for LeetCode 420. Strong Password Checker in Python, Java, C++ and more. Intuitions, example walk through, and complexity analysis. Better than official and forum solutions.
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Thundercloud
thundercloud.net β€Ί infoave β€Ί new β€Ί passwordmonster-how-strong-are-your-passwords
PasswordMonster: How Strong Are Your Passwords? – Cloudeight InfoAve
September 26, 2024 - Password Monster is a straightforward online tool that quickly assesses the strength of your passwords. It’s a valuable resource for anyone looking to improve their online security.
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Monster Password
monsterpassword.com β€Ί home β€Ί uncategorized β€Ί is password monster safe?
Is Password Monster Safe? - Honest Review Monster Password
May 28, 2025 - Tools like MonsterPassword.com help users recognize the difference between β€œokay” and β€œsecure”. No. Everything runs in your browser. Nothing is saved or sent anywhere. Yes. It works the same way across all devices – securely in-browser. Longer passwords (passphrases) are generally safer than short complex ones.