Free online strong password generator
Build secure random passwords with tunable length and character sets. Exclude ambiguous characters when you need easier reading or typing - then copy into a password manager.
What you can do
Tunable length
Set length from short test secrets to long manager-friendly strings (up to 64 characters) so you can match site rules.
Character sets
Toggle uppercase, lowercase, digits, and symbols. Exclude ambiguous characters (O/0/I/l/1) when typing by hand.
Local & private
Generation uses your browser crypto APIs. Nothing is uploaded or stored by this tool.
What makes a password strong
- Length first
- Longer passwords beat clever substitutions for most guessing attacks. Aim for at least 16 characters on important accounts when the site allows it.
- Random character sets
- Mixing upper, lower, digits, and symbols increases entropy per character. Avoid predictable patterns like SeasonYear!.
- Uniqueness
- Reusing passwords turns one breach into many. Generate a unique secret per site and store it in a password manager. How strong passwords work.
Generator options
Length slider
Adjust from short (for constrained forms) to long (for vault-stored secrets). The on-page strength hint is length-based - not a full entropy audit.
Character toggles
Enable the sets the target site accepts. Leave at least one set on so generation can succeed.
Exclude ambiguous
Drops look-alikes like O/0 and I/l/1 - helpful when you must read or type the password from a screen.
How to use this password generator
- Set the length with the slider.
- Toggle uppercase, lowercase, digits, symbols, and ambiguous exclusion as needed.
- Click Generate to create a new random password.
- Copy it into your password manager - do not reuse it across sites.
Frequently asked questions
Learn more about passwords
Related tools: SHA-256 generator, UUID generator, JWT decoder.
Why generate passwords locally?
A local generator means the password never crosses the network during creation. Pair it with a reputable password manager, unique passwords per site, and multi-factor auth where available.