Password strength tester

Check length, repeated characters and obvious sequences without sending the password anywhere.

On your device · No account

Privacy details

Password strength tester processes your input in this browser. Inputs and results are excluded from analytics. Recent tools save tool names, visit counts and last-visit times. Saved tools store only their names. Draft saving is optional and stays on this device; delete saved text with the draft controls. Loading text from a URL is optional and contacts that server; its URL and your IP address are visible to the server. An optional “Use in” action keeps a handoff in this tab. The next tool removes it on arrival and ignores it if more than a minute has passed.

Copy link includes the inputs you choose to share in the address. Anyone with that link can reopen them. Files and generated results are excluded. Password and key tools share settings only.

Password to inspect

Your result

Reset reloads the tool with its starting values and releases open files and device controls. Saved drafts stay on this device until you delete them.

Links include your inputs and settings. Anyone with the link can see them, so leave out private text. Files and generated results are left out; random draws run again.

Keyboard shortcuts

Updated 2026-09-19

Using Password strength tester

Password strength tester reports directly observable features. It does not assign an unsupported safety percentage or transmit the value to a breach service.

Next: Password generator

A worked example

A password made of twelve identical letters is reported as twelve characters and flagged for repetition.

Before you use the result

These are simple pattern checks, not an entropy estimate, breach database or prediction of cracking time. A result with no flags is not proof of safety. Use unique generated passwords and a password manager.

Cite this page

Citation style

ToolOctopus. “Password strength tester.” Updated 2026-09-19. https://tooloctopus.com/password-strength-checker.

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