Skip to content
SurenoGet Sureno

How strong is my password?

Type a password to see how hard it is to guess, and how to make it stronger. Nothing you type is sent anywhere.

Private by design: this tool runs in your browser. Nothing you add is uploaded.

How to use it

  1. Type a password, or one like it, in the box.
  2. Tick "Show" if you want to see what you typed.
  3. Read the rating, the time to crack it, and the tips.
  4. Make it longer, or use the Password generator, until it is rated strong.
Screenshot of the Password strength checker tool on Sureno, in use
Password strength checker in use: a real screenshot of this page.

Questions and answers

Is it safe to type my real password here?

The check runs only in this page and nothing is sent. To be extra careful, type a similar password instead.

How is the time worked out?

It estimates the guesses needed from length, character types and common patterns, at the speed of a fast offline attack.

What makes a password weak?

Being short, being a common word or name, or following a pattern like "Summer2026!" that attackers try first.

Related tools

Password generatorMake strong passwords or easy-to-remember passphrases.Password protect PDFLock a PDF with a password before you send it.Hash generatorMD5, SHA-1 and SHA-256 fingerprints for text or a file.What browser do I have?Your browser, its version, your system and screen, at a glance.What is my IP address?See the IP address websites see when you visit them.UUID generatorRandom UUID version 4 identifiers.

All of this, one click away

Sureno Browser keeps a PDF editor and everyday tools built in, and works offline. Free, calm and private.

Get Sureno for Mac

More news

Loading more stories…