Password Generator
Generate strong random passwords with custom length, symbols and character options for accounts, apps and secrets.
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Password Options
Length:
Password
About Password Generator
This password generator creates strong, random passwords entirely in your browser. Unlike online generators that may log your passwords, this tool uses your browser's built-in cryptographic random number generator (crypto.getRandomValues) when available, ensuring that generated passwords are both secure and private.
Why Use a Random Password Generator?
Humans are notoriously bad at creating random passwords. We tend to use patterns, dictionary words, and predictable substitutions (like P@ssw0rd). Random password generators eliminate these weaknesses by creating truly unpredictable strings that are computationally infeasible to guess.
Password Strength by Length
| Length | Character Types | Estimated Entropy | Use Case |
|---|---|---|---|
| 8-10 chars | Mixed | ~52-65 bits | Low-security accounts |
| 12-16 chars | Mixed | ~78-104 bits | Standard online accounts |
| 20+ chars | Mixed | ~130+ bits | High-security accounts, encryption |
Character Set Options
- Lowercase (a-z): 26 characters, essential for most password requirements
- Uppercase (A-Z): 26 characters, often required by password policies
- Digits (0-9): 10 characters, adds numeric complexity
- Symbols (!@#$...): ~25 characters, significantly increases entropy
- Exclude ambiguous: Removes 0, O, I, l, 1 for easier manual entry
Security Best Practices
- Use a unique password for every account - password reuse is a leading cause of breaches
- Store passwords in a reputable password manager rather than trying to remember them
- Enable two-factor authentication (2FA) wherever available
- Longer passwords are more important than complex patterns
- Avoid using personal information (names, birthdays, pet names)
How to Generate a Secure Password
- Set the length: Enter a password length between 4 and 256 characters. For most accounts, we recommend 16 characters or longer.
- Choose character types: Select which character sets to include. For maximum security, enable all options (lowercase, uppercase, digits, and symbols).
- Consider ambiguous characters: If you'll need to type the password manually or read it aloud, check "Exclude ambiguous characters" to remove confusing characters like 0, O, I, l, and 1.
- Generate: Click the "Generate Password" button to create a random password with your selected criteria.
- Copy and store: Click "Copy Password" to copy it to your clipboard, then paste it into your account settings or password manager.
Example Generated Passwords
16 characters, all character types:
K#9mX$2pL@7nQ!5v
12 characters, no symbols (easier to type):
a7Bk2Nm9Pq4x
24 characters, maximum security:
H#8jK$3mN@6pQ!9vLx2Yz5Wr
Frequently Asked Questions
- How strong are passwords generated by this tool?
- Passwords are generated using cryptographically secure random numbers via the browser's crypto.getRandomValues() API when available. A 16-character password with mixed character types has approximately 95 bits of entropy, making it resistant to brute-force attacks with current technology.
- Are generated passwords stored or transmitted anywhere?
- No. Password generation happens entirely in your browser using JavaScript. The generated passwords are never sent to any server, logged, or stored persistently. When you close the page, the passwords are gone.
- What password length should I use for different scenarios?
- For most online accounts: 12-16 characters minimum. For high-security accounts (banking, email, password manager): 16-20+ characters. For encryption keys or API secrets: 32+ characters. Length matters more than complexity for resisting brute-force attacks.
- Should I exclude ambiguous characters?
- Excluding ambiguous characters (0, O, I, l, 1) is helpful when you need to type passwords manually or read them aloud. However, including them increases the character pool and makes passwords slightly stronger. Use exclusion for passwords you'll type frequently, include them for passwords stored in a password manager.
- Can I use these passwords for cryptocurrency wallets or encryption?
- For cryptocurrency seed phrases or encryption keys, use 32+ characters and consider using a dedicated hardware wallet or key management system. This tool is suitable for generating high-entropy passwords, but proper key storage is equally important.