### Password Settings Generate

Password Length: 16

Character Types

Uppercase Letters (A-Z)

Lowercase Letters (a-z)

Numbers (0-9)

Symbols (!@#$%^&*)

Exclusions

Exclude Similar Characters (i, l, 1, L, o, 0, O)

Exclude Ambiguous Characters ({}[]\"'`~,;:.<>)

### Generated Password

Click "Generate" to create a new password

# Password Generator - Create Strong, Secure Passwords Instantly

Generate cryptographically random, strong passwords with customizable length and character sets. Free online password generator with strength meter. 100% browser-based - passwords are never transmitted over the internet.

## Why Strong Passwords Matter in 2026

A unique password for each account helps prevent a breach at one service from exposing your other accounts. A password manager can store distinct passwords so you do not have to remember each one.

Long, randomly generated passwords are harder to guess than common words or predictable patterns. Actual resistance depends on how the password is generated and stored, the service's security, and the attacker's access; no fixed cracking time applies to every situation.

Generation happens in your browser. The tool does not store the generated password itself, but copying places it on your clipboard; save it in a trusted password manager and follow your device's clipboard policies.

For guidance on an example password, use the [password strength checker](https://www.toolcomb.com/password-strength-checker). For a non-secret identifier instead of a password, see the [UUID generator](https://www.toolcomb.com/uuid-generator); identifiers should not be treated as passwords.

### How to Use This Password Generator

1. Adjust the **password length** slider. 16 characters is a strong default; use 20+ for high-value accounts.
2. Select **character types**: uppercase letters (A-Z), lowercase letters (a-z), numbers (0-9), and symbols (!@#$%^&*). All four types enabled maximizes entropy.
3. Optionally enable **Exclude Similar Characters** to remove i/l/1/L/o/0/O that look alike - useful for passwords you might need to type manually.
4. Optionally enable **Exclude Ambiguous Characters** to remove symbols that may cause issues in some configuration files or web forms.
5. Click **Generate** to create a new password. The enabled types form the pool; each type is not guaranteed to appear in every result.
6. Check the **strength meter** - aim for "Strong" (green bar) for important accounts.
7. Click **Copy** to copy to clipboard, then immediately save it in your password manager.

Use a trusted password manager to store unique passwords securely. The strength meter is a simple estimate, not a guarantee.

### Password Strength Guide: What Makes a Password Secure?

Password strength is determined by **entropy** - a measure of unpredictability. Higher entropy means more combinations an attacker must try. Here is how character sets affect entropy per character:

| Character Set | Pool Size | Bits/char | 16-char combinations |
| --- | --- | --- | --- |
| Lowercase only (a-z) | 26 | 4.7 | 4.4 × 10²² |
| Lowercase + numbers | 36 | 5.2 | 7.9 × 10²⁴ |
| Upper + lowercase | 52 | 5.7 | 5.2 × 10²⁷ |
| Upper + lower + numbers | 62 | 5.95 | 4.7 × 10²⁸ |
| All character types | 88 | 6.46 | ~1.3 × 10³¹ |

Weak

A short password or limited character variety.

Fair

Some length or character variety, but room to improve.

Good

More length and character variety.

Strong

The meter's highest score; a useful indicator, not a guarantee.

### Password Security Best Practices for 2026

#### Use a Password Manager

A password manager generates, stores, and autofills strong unique passwords for every account. You only need to remember one strong master password. Recommended: **Bitwarden** (open-source, free), **1Password**, **Dashlane**, or your browser's built-in manager. With a password manager, there is no excuse for weak or reused passwords.

#### Enable Two-Factor Authentication (2FA)

Even the strongest password can be stolen via phishing or data breaches. Two-factor authentication (2FA) adds a second verification step - typically a time-based one-time password (TOTP) app like Google Authenticator, Authy, or a hardware key like YubiKey. Enable 2FA on all accounts that support it, especially email, banking, and SSO accounts.

#### Use Unique Passwords for Every Account

Password reuse is catastrophic when any site you use suffers a breach. Attackers use **credential stuffing** - taking leaked username/password pairs from one breach and trying them across hundreds of other sites automatically. A unique password for every site means one breach cannot cascade into all your accounts.

#### Check for Compromised Passwords

The [Have I Been Pwned Passwords](https://haveibeenpwned.com/Passwords) database contains billions of passwords exposed in known data breaches. Check if your passwords appear in known breaches, and replace any that do immediately. Many password managers integrate this check automatically.

#### Passphrase Alternative

For passwords you must memorize (like a master password or device PIN), consider a **passphrase** - a sequence of random words like "correct-horse-battery-staple." A 4-word random passphrase has approximately 55 bits of entropy, comparable to a 9-character fully random password, but much easier to remember and type.

#### Never Share Passwords

Legitimate services will never ask for your password via email, phone, or chat. Password sharing (even with trusted people) increases risk of exposure. Use proper delegation tools - shared password manager vaults, time-limited access tokens, or OAuth-based access instead of sharing credentials directly.

### Common Password Mistakes to Avoid

- **Using dictionary words:** Common words, names, and phrases are vulnerable to dictionary attacks. Even with letter substitutions like "p@ssw0rd," these patterns are well-known to crackers.
- **Using personal information:** Birthdays, names, pet names, addresses, and phone numbers that attackers can find on social media make easy targets for targeted attacks.
- **Short passwords:** Any password under 12 characters is increasingly vulnerable as hardware gets cheaper and faster. Aim for 16+ characters.
- **Keyboard walks:** Patterns like "qwerty," "123456," "asdfghjkl," or "zxcvbnm" are trivially checked in any brute-force attack.
- **Reusing passwords across sites:** This is the most dangerous practice - a single breach at any site exposes all your accounts.
- **Adding a number or symbol at the end:** "Password1!" is a very common pattern that password-cracking algorithms specifically test. Random placement of characters throughout the password is much stronger.

### Frequently Asked Questions About Password Generation

#### How long should a password be?

For most accounts, **16 characters** with mixed character types provides excellent security. For high-value accounts (email, banking, master passwords), use 20+ characters. For low-stakes accounts, 12 characters is acceptable. The National Institute of Standards and Technology (NIST SP 800-63B) recommends prioritizing length over complexity requirements.

#### Are generated passwords truly random?

The tool uses your browser's secure randomness to select characters. The enabled character types define the pool, but the result is not guaranteed to include every enabled type.

#### Should I include symbols in passwords?

Symbols can enlarge the character pool when a service accepts them. If a service rejects a password, check its allowed characters and generate a compatible alternative. A longer random password can also be useful when symbols are restricted.

#### Is this password generator safe to use?

Yes. All password generation happens entirely in your browser - no passwords are transmitted to any server. The tool generates passwords on your device using JavaScript and displays them only on your screen. Verify by watching the Network tab in browser DevTools while generating - no requests will be made. Copy the password to your clipboard and store it in a password manager immediately.

#### Is a longer password always better?

For randomly generated passwords using the same character pool, additional length increases the number of possible combinations. Use a length the service supports, keep passwords unique, and enable multi-factor authentication when available.

## Related Tools

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### Related guides

Read the how-to, then come back to this tool when you are ready to run it locally.

- [What Not to Paste Into Online Developer Tools JWTs, API keys, customer JSON, and password checkers: a practical list of what to keep off random websites, and which jobs can stay in the browser.](https://www.toolcomb.com/blog/what-not-to-paste-into-online-developer-tools)
- [How to Generate a Strong Password in the Browser High-entropy passwords generated on-device. Nothing sent to a server.](https://www.toolcomb.com/blog/how-to-generate-a-strong-password-in-the-browser)
- [How to Check Password Strength Before You Reuse It Strength analysis in the browser. The password is not stored or transmitted.](https://www.toolcomb.com/blog/how-to-check-password-strength)

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