Video guide · 21 seconds
Watch: generate a strong password
No sound. Each step is captioned on screen and also written out in the guide below.
Data & developer tools Security
Password Generator
Create strong random passwords and PINs to match any site's rules. They're generated on this device and never stored.
Workspace
Generate a password
Runs locally in your browser. Passwords come from your browser's secure random generator and are never uploaded, saved, or shared.
Your password
Very strong · about 103 bits of entropy from 89 possible characters
Settings apply instantly. Nothing leaves this browser.
A quick guide
A strong password in three steps
- 01Pick a length
Use a preset like 8 or 16, or any length up to 128. Longer is stronger.
- 02Choose characters
Turn symbols or digits on or off to match the site's rules. Digits only makes a PIN.
- 03Copy it
Paste it into your password manager or the sign-up form. Nothing is saved here.
Example
How length changes strength
8 chars, letters + digits ~47 bits Fair
16 chars, all types ~103 bits Very strong
6-digit PIN ~19 bits WeakEach extra character multiplies the number of possible passwords, so adding length is the easiest way to add strength.
Good to know
Frequently asked questions
How random are these passwords?
Each character is picked with your browser's cryptographically secure random generator (crypto.getRandomValues), with every allowed character equally likely. The tool never falls back to a weaker source.
Are my passwords stored or sent anywhere?
No. They are generated in this tab and disappear when you leave or reset. There is no download button, so passwords aren't left in a file on your device.
How long should a password be?
For most accounts, 16 characters with all types is very strong. Use at least 12 if a site limits length, and prefer a password manager to remember them.
Why avoid look-alike characters?
Characters like l, 1, and I are easy to confuse when you have to read or type a password by hand. Avoiding them slightly reduces strength, which the entropy estimate shows.
What does "bits of entropy" mean?
It estimates how many guesses an attacker would need: each extra bit doubles the number. It is calculated as length × log₂(number of possible characters).