Password Strength Checker
Estimate how long a password would take to crack. Free, private and instant.
How to use the Password Strength Checker
- Enter your values in the fields above.
- The result updates automatically as you type.
- Copy or note the figures you need.
About this tool
Type a password to get an entropy-based strength estimate. The password is analysed locally and never leaves your device.
Password Strength Checker is part of ToolStack Hub's Generators & Utilities. It runs entirely in your browser, which keeps your data private and makes results instant. There is nothing to install, no account to create and no usage limit.
Frequently asked questions
Is the Password Strength Checker free?
Yes. Password Strength Checker is completely free with no sign-up, limits or watermarks.
Is my data private when I use the Password Strength Checker?
Yes. It runs in your browser, so your input is not uploaded to our servers.
Does it work on mobile?
Yes. ToolStack Hub tools work on phones, tablets and desktop browsers.
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