How are passwords generated?

The tool uses Web Crypto random values with rejection sampling so every character in the selected pool has an equal chance of being chosen.

Does enabling a character type guarantee it will appear?

No. Each position is drawn independently from the combined pool, so a selected type can be absent by chance. Generate again if a service requires at least one character from every enabled group.

What does the entropy estimate mean?

It estimates length multiplied by the base-2 logarithm of the selected pool size. It assumes uniform random generation and does not measure how safely the password is stored or reused.

Password Generator

LocalFree

Create random passwords with your choice of length and character rules

Password Length

Uppercase (A-Z)Lowercase (a-z)Numbers (0-9)Symbols (!@#$)

Output

Strong103 bits of entropy

Entropy measures how many equally likely values this generator could have produced. It describes the generator, not how the value is stored or used afterwards.

Runs in your browser; files and input stay on this device

How to use Password Generator

1Set a password length from 8 to 50 characters.
2Choose whether the character pool includes uppercase letters, lowercase letters, numbers, and symbols.
3Generate a new password and copy it to your password manager.

Frequently asked questions

How are passwords generated?: The tool uses Web Crypto random values with rejection sampling so every character in the selected pool has an equal chance of being chosen.
Does enabling a character type guarantee it will appear?: No. Each position is drawn independently from the combined pool, so a selected type can be absent by chance. Generate again if a service requires at least one character from every enabled group.
What does the entropy estimate mean?: It estimates length multiplied by the base-2 logarithm of the selected pool size. It assumes uniform random generation and does not measure how safely the password is stored or reused.