Secure Password Generator
Generate strong passwords instantly. No forms, no storage, no network calls.
Your password
iuoaSZkXmf6ZdF8S
Entropy
93 bits
Strength: Elite
Estimated entropy based on selected character sets and length.
What is password entropy?
Entropy measures how unpredictable a password is, in bits. Every extra character and character set (lowercase, uppercase, numbers, symbols) increases entropy exponentially, making a password harder to guess or brute-force.
An 8-character lowercase-only password has around 37 bits of entropy. The same length with mixed case, numbers, and symbols can exceed 52 bits. Aim for 60+ bits — roughly a 12+ character mixed password — for anything you want to keep secure long-term.
Common password mistakes
Reusing passwords across sites
One breach exposes every account using that password. Generate a unique one per site.
Dictionary words or names
Cracking tools check dictionary words first. Random characters resist this entirely.
Predictable substitutions like P@ssw0rd
Attackers already account for common substitutions. Length matters far more than tricks.
Passwords under 12 characters
Shorter passwords fall to brute-force faster. Use 16+ characters when a site allows it.
Storing passwords in plain text
A text file or spreadsheet is not secure storage. Use a password manager instead.
FAQ
Are passwords stored?
No. Everything stays in your browser.
How secure is this?
Secure randomness, with visible entropy.
What makes a password strong?
Length and variety, not substitution tricks.
How long should my password be?
12+ for most accounts, 16+ for sensitive ones.
Should I include symbols?
Yes, whenever the site allows it.
Is a generator better than making one up myself?
Yes. People are predictable; generators aren't.
Quick tips
- Use 16+ characters for most accounts.
- Enable symbols for higher entropy.
- Never reuse passwords across sites.