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Password Generator

🔐 Password Generator

Generate strong, secure random passwords using cryptographically safe randomness. Choose length and character sets, check strength, and copy instantly.

Password Length 16

864

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

Password Strength —

Entropy: — bits

How Password Strength Is Measured

Strength is measured by entropy bits: the number of bits required to represent all possible passwords of this length and character set.

Entropy = length × log₂(charset size)

e.g., 16 chars, all sets (95 chars) = 16 × 6.57 ≈ 105 bits (Very Strong)

Weak

< 40 bits

Fair

40–59 bits

Good

60–79 bits

Strong

80–99 bits

Very Strong

≥ 100 bits

How to Use the Password Generator

1

Set Your Length

Drag the slider to choose between 8 and 64 characters. Longer passwords are exponentially harder to crack.
2

Choose Character Sets

Enable or disable uppercase, lowercase, numbers, and symbols. At least one must be selected.
3

Generate & Check Strength

Click "Generate Password" to create a new password. The strength meter shows entropy in bits.
4

Copy to Clipboard

Click "Copy" to instantly copy the password. The button confirms with "Copied!" feedback.
5

Generate Multiple

Click "Generate 5" to create a batch of 5 passwords at once — each with its own copy button.