Password Generator

Generate strong, secure random passwords with custom length and character options. Everything runs in your browser — no data is ever sent or stored.

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Options

16
4 128
Generated Password
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Strength —
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Characters
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Entropy (bits)
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Char Pool
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Tips

Password Security Best Practices

Follow these guidelines to keep your accounts safe

Use Length
16+

Longer passwords are exponentially harder to crack. Aim for at least 16 characters for important accounts.

Mix Types
A–Z a–z 0–9

Combining uppercase, lowercase, numbers, and symbols vastly increases the possible combinations.

Use a Manager
1 per site

Use a password manager to store unique passwords for every site. Never reuse the same password twice.

Enable 2FA
Always

Two-factor authentication adds a second layer of protection even if a password is ever compromised.

Privacy note: All passwords are generated using the browser's crypto.getRandomValues() API — a cryptographically secure random number generator. No passwords are ever sent to a server or stored anywhere.

FAQ

Common Questions

Is this password generator truly random?
Yes. Passwords are generated using window.crypto.getRandomValues(), which is a cryptographically secure pseudo-random number generator (CSPRNG) built into all modern browsers. This is the same level of randomness used by security software — far stronger than Math.random().
Are my generated passwords stored or sent anywhere?
No — never. The entire generation process happens in your browser using JavaScript. Nothing is transmitted to any server. Once you close or reload the page, all passwords are gone.
What does the entropy number mean?
Entropy measures password unpredictability in bits. It's calculated as length × log₂(pool size). Higher entropy means more guesses are needed to crack the password. As a guide: below 40 bits is weak, 40–60 bits is reasonable, 60–80 bits is strong, and 80+ bits is very strong for most use cases.
How long should my password be?
For most accounts, 16 characters with all character types enabled is more than sufficient. For high-value accounts (banking, email, work), 20–32 characters is recommended. The longer the password, the harder it is to crack — even with modern hardware.
What are "similar" and "ambiguous" characters?
Similar characters (il1Lo0O) look alike in certain fonts, making manual entry error-prone. Ambiguous symbols ({}[]()/\'") can cause issues in some systems or command-line contexts. Excluding them makes passwords easier to type manually without sacrificing much security.
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Copy the code below and paste it into any webpage to add this free Password Generator to your site — credit stays with ToolHiveHub.

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