Password Generator

Q: What makes a password strong?

Length is the most important factor. A strong password has 16+ characters, mixes uppercase, lowercase, numbers, and symbols, and avoids dictionary words, patterns, and personal information.

Q: How many characters should my password be?

Minimum 12 characters for general use, 16+ for important accounts, and 20+ for highly sensitive accounts like banking and email. Each additional character exponentially increases strength.

Q: Should I use a password manager?

Yes. Password managers generate and store strong unique passwords for each account. You only need to remember one master password for your password manager.

Q: Is this tool storing my password?

No. All passwords are generated entirely in your browser. Nothing is sent to any server. Your generated passwords never leave your device.

Generate genuinely random, hard-to-crack passwords with the length and character mix you choose — plus an entropy score so you know exactly how strong it really is.

What is Password Generator?

A Password Generator creates cryptographically random passwords based on your specifications. Choose length and character types to create passwords that are both strong and compliant with website requirements.

Formula

Password space = (Character pool size)^length

Entropy (bits) = length × log₂(pool size)

- 72-bit+ = strong against offline attacks

- 128-bit+ = extremely secure (centuries to crack)

How to Calculate

Set the desired password length (8-128 characters).
Select which character types to include: uppercase, lowercase, numbers, special characters.
Click Generate to create a random password.
Check the strength indicator and copy your password.

Example

A 16-character password using all 4 character types (pool of 95 chars) has 95^16 ≈ 4.4×10^31 combinations. At 350 billion guesses/second, it would take ~4×10^12 years to crack.

Key Benefits

Generate strong passwords instantly
Customize character types and length
See strength and entropy metrics
Completely free and private

Common Mistakes to Avoid

Reusing passwords across accounts
Using dictionary words or common substitutions
Making passwords too short (< 12 chars)
Storing passwords in plain text

Pro Tips

Aim for at least 16 characters
Use a password manager to store generated passwords
Enable 2FA on all important accounts
Generate a unique password for every account

Key Terms Explained

Entropy: Measure of password unpredictability
Brute force: Trying all possible combinations
Character pool: Set of available characters
Password manager: Tool for secure password storage

Common Use Cases

Creating new account passwords
Generating secure API keys and tokens
Replacing weak reused passwords
Creating unique passwords for each service

Frequently Asked Questions

What makes a password strong?

Length is the most important factor. A strong password has 16+ characters, mixes uppercase, lowercase, numbers, and symbols, and avoids dictionary words, patterns, and personal information.

How many characters should my password be?

Minimum 12 characters for general use, 16+ for important accounts, and 20+ for highly sensitive accounts like banking and email. Each additional character exponentially increases strength.

Should I use a password manager?

Yes. Password managers generate and store strong unique passwords for each account. You only need to remember one master password for your password manager.

Is this tool storing my password?

No. All passwords are generated entirely in your browser. Nothing is sent to any server. Your generated passwords never leave your device.

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Frequently Asked Questions

What makes a password strong?

Length is the most important factor. A strong password has 16+ characters, mixes uppercase, lowercase, numbers, and symbols, and avoids dictionary words, patterns, and personal information.

How many characters should my password be?

Minimum 12 characters for general use, 16+ for important accounts, and 20+ for highly sensitive accounts like banking and email. Each additional character exponentially increases strength.

Should I use a password manager?

Yes. Password managers generate and store strong unique passwords for each account. You only need to remember one master password for your password manager.

Is this tool storing my password?

No. All passwords are generated entirely in your browser. Nothing is sent to any server. Your generated passwords never leave your device.