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Password Generator

Passwords are generated by your browser's cryptographic random source and never sent anywhere. Choose a length, choose which character types to include, and read the entropy figure to judge the strength honestly.

How to use it

Set the length — sixteen characters or more for anything that matters.
Tick the character types the site accepts.
Generate and copy, then store it in a password manager.

Examples

16 characters from all four types → around 100 bits of entropy.
Removing lookalike characters helps when a password must be read aloud or typed from paper.
A 12-character letters-only password has less entropy than an 8-character mixed one — length still wins overall.

Questions people ask

What does entropy actually measure?

How many guesses an attacker needs on average. Every extra bit doubles that number. Anything under 50 bits is weak against modern hardware; above 75 bits a brute-force attack becomes impractical.

Should I memorise these?

No, and that is the point. Use a password manager and let every account have its own unrepeatable password. For the few you must type from memory, a long passphrase of unrelated words is easier to recall and can be just as strong.

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Updated: 2026-08-07