Password generator

How to use

1. Enter the length (4 to 128) and how many passwords you need (1 to 100). The slider changes the length too.
2. Choose the character types (uppercase, lowercase, digits, symbols). Use "Symbols to use" to allow only certain symbols, for example when a site accepts a limited set.
3. Optionally turn on "Exclude look-alike characters" and "Include at least one of each selected type". The list is regenerated as soon as you change a setting.
4. Use "Copy" on a row for one password, or "Copy all" for the whole list, one per line.

Notes and limits

• Passwords are not saved. They are gone when you close the page or generate again, so store the ones you use in a password manager.
• The strength label is an entropy estimate from the number of possible characters and the length. It is not a promise about how long cracking would take.
• With "Include at least one of each selected type", combinations that miss a type are discarded, so the real entropy is slightly lower than shown.
• This page loads no analytics or ad scripts and does not record what you do.

How it works

Randomness comes from the browser's crypto.getRandomValues (a cryptographic random number generator), never Math.random.

Characters are picked with rejection sampling: 32-bit random values from the uneven tail that does not divide evenly by the number of characters are thrown away and drawn again. This avoids the modulo bias of a plain % that makes some characters more likely.

For "at least one of each type", passwords that miss a type are discarded and generated again, so the result is uniform among all passwords that meet the rule.

Entropy is calculated as length × log2(number of possible characters).