Password Strength Checker

Check how strong a password is and estimate how long it would take to crack.

Password

0

Entropy (bits)

—

Est. offline crack time

Assumes a fast attacker guessing 10 billion passwords per second.

How to use

Type a password into the box.
See its strength rating and estimated crack time update live.
Follow the tips to make it stronger.

Frequently asked questions

Is it safe to type my password here?

Yes. The check runs entirely in your browser — your password is never sent anywhere, logged, or stored.

How is strength measured?

It estimates entropy from length and the mix of character types, then approximates how long a fast attacker would need to guess it.

🔒 This tool runs entirely in your browser. Nothing you enter is uploaded, logged, or stored.

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