Password Generator for Strong, Random and Secure Passwords
Create a random password using your preferred length, uppercase and lowercase letters, numbers, and symbols. Passwords are generated locally in your browser.
Create a random password
Choose the length and character types you want to include.
How to Use the Password Generator
The Password Generator creates a random password using the length and character types you select. You can include uppercase letters, lowercase letters, numbers, and symbols, then copy the generated result for use on an account.
- Choose a password length. Select a common length such as 12, 16, 20, 24, or 32 characters, or enter another supported length.
- Select the character types. Choose uppercase letters, lowercase letters, numbers, and symbols.
- Adjust the additional options. You can exclude similar-looking characters or require at least one character from every selected group.
- Generate the password. The tool creates a new random password based on your settings.
- Copy the result. Use the Copy Password button and save the password in a secure place.
What Is a Password Generator?
A Password Generator is a tool that creates random passwords from a set of characters instead of asking you to think of a password yourself.
Depending on the settings you choose, the character pool can include:
- Uppercase letters from A to Z
- Lowercase letters from a to z
- Numbers from 0 to 9
- Symbols such as !, @, #, $, and %
A generated password may look like this:
u7$Qp9!Lm2@Rx4Za
Do not use that example as your real password because it is publicly visible. Generate a fresh password with the tool instead.
How Does the Password Generator Work?
UtilityDocks uses the browser’s Web Crypto API to create random values. The browser method Crypto.getRandomValues() is designed for cryptographically strong randomness.
This differs from basic pseudo-random functions such as Math.random(), which are not intended for security-sensitive password generation.
When you select your settings, the tool creates a character pool from the enabled groups. It then selects random characters from that pool until the requested password length is reached.
How your password is handled
- The password is generated in your browser.
- No account is required to use the tool.
- The generated password is not placed in the page URL.
- The password does not need to be uploaded for generation.
- You can copy the result directly to your clipboard.
You should still treat any password displayed on your screen or copied to your clipboard as sensitive information.
What Makes a Strong Password?
A strong password is not defined by one rule alone. Length, randomness, uniqueness, and safe storage all affect password security.
Use a Longer Password
Current NIST consumer guidance recommends passwords of at least 15 characters. Password length is one of the most important factors affecting resistance to password guessing.
For a randomly generated password, 16 characters is a practical default for many accounts. If a service supports longer passwords, you can choose 20, 24, or 32 characters instead.
Use Random Characters
A password can satisfy common complexity requirements and still be predictable.
Summer2026!
This example contains uppercase letters, lowercase letters, numbers, and a symbol, but its word and date pattern can still be easier to predict than a genuinely random password.
Password attacks can use common password lists, dictionary words, leaked credentials, and predictable substitutions. Random generation helps avoid many of these human-created patterns.
Use a Unique Password for Every Account
A strong password should not be reused across different services.
If the same password is used on several websites and one service exposes it, attackers may try the same login details on other accounts.
Generating a separate password for each account limits the damage one exposed credential can cause.
Does a Strong Password Need Uppercase Letters, Numbers and Symbols?
Not necessarily. Older password advice often treated a particular mixture of uppercase letters, lowercase letters, numbers, and symbols as the main definition of a strong password.
Current NIST guidance does not recommend forcing composition rules for user-created passwords simply for the sake of complexity. People often satisfy such rules in predictable ways, such as adding one number and one symbol to a common word.
Character controls are still useful in a Password Generator because many websites impose their own password requirements. A larger character pool can also increase the number of possible randomly generated combinations.
Password Length Options Explained
Different websites use different password rules. The generator therefore lets you choose from common lengths or enter a custom supported length.
| Password Length | When It May Be Useful |
|---|---|
| 8 characters | Mainly for websites or legacy systems that impose a short requirement. |
| 10 characters | Useful when a service has a specific short password requirement. |
| 12 characters | Still accepted by many websites, although longer passwords are preferable where supported. |
| 14 characters | A moderate-length option when a particular service allows it. |
| 15 characters | Matches the current minimum length recommendation in NIST consumer password guidance. |
| 16 characters | A practical default for a strong random password. |
| 20 characters | Provides a larger random combination space when supported. |
| 24 characters | Useful for passwords mainly stored and filled by a password manager. |
| 32 characters | Suitable where long generated passwords are accepted. |
Do not assume every website accepts every symbol or password length. If a site rejects the generated result, check its password requirements and adjust the settings.
Why 16 Characters Is the Default
The UtilityDocks Password Generator starts at 16 characters because it provides a useful balance between length and compatibility.
NIST currently advises users to create passwords that are at least 15 characters long. Using 16 characters gives the tool a simple default while still allowing shorter or much longer passwords when a website has different requirements.
Longer passwords are especially practical when:
- the website accepts them
- you store them in a password manager
- you do not need to type them manually every time
What Are Ambiguous Characters?
Ambiguous characters are characters that can be easy to confuse when reading or typing a password.
| Character | May Be Confused With |
|---|---|
| O | 0 |
| 0 | O |
| I | l or 1 |
| l | I or 1 |
| 1 | I or l |
These characters are not inherently insecure. The Exclude similar-looking characters option is mainly a usability feature.
It can help when you expect to read a password from another device or type it manually.
What Does Estimated Entropy Mean?
The Password Generator displays an estimated entropy value for the generated password.
For a truly random selection process, password length and the size of the available character pool can be used to estimate the number of possible combinations.
A higher entropy value generally represents a larger theoretical search space.
Random Password vs a Password You Create Yourself
| Random Password | Self-Created Password |
|---|---|
| Generated using random character selection | Often based on words, names, dates, or personal patterns |
| Less likely to follow common human habits | May contain predictable substitutions |
| Easy to make 16, 20, 24, or 32 characters long | People may choose shorter passwords for convenience |
| Easy to create a different password for each account | Password reuse can become tempting |
| Usually best stored in a password manager | Often designed to be remembered manually |
A self-created password is not automatically weak, but people are less reliable at creating independent random values than software designed for that purpose.
How to Store Generated Passwords Safely
Generating a strong password is only one part of account security. You also need to store the password safely.
A reputable password manager can store long, unique passwords so you do not have to remember every generated password individually.
After generating a password
- Save it in a trusted password manager.
- Use a different password for every important account.
- Avoid sending passwords through insecure messages.
- Do not keep passwords in publicly accessible notes or documents.
- Protect your password manager with a strong master password.
- Enable multi-factor authentication where available.
Should You Change Passwords Regularly?
Changing a password every 30, 60, or 90 days simply because a fixed period has passed is no longer considered a universal password-security best practice.
Current NIST guidance recommends against arbitrary periodic password changes when there is no evidence of compromise.
You should change a password when there is a meaningful reason, such as:
- the password may have been exposed
- the service reports a security breach
- you accidentally shared the password
- you reused it on another compromised account
- you suspect unauthorized access
- a service requires a change after a security event
When replacing a password, generate a completely new one instead of making a small predictable change to the previous password.
Use Multi-Factor Authentication When Available
Even a very strong random password cannot prevent every form of account compromise.
Phishing, malware, session theft, and other attacks can sometimes bypass password protection.
Multi-factor authentication adds another verification step beyond the password and can provide additional protection if a password is exposed.
Password Generator FAQs
Is the UtilityDocks Password Generator safe?
The tool generates passwords locally in your browser using the Web Crypto API. The password does not need to be sent to UtilityDocks to be created. You should still protect the result after generation and avoid sharing it through screenshots, messages, or insecure storage.
Is my generated password stored?
The tool is designed to create the password in your browser rather than send it to a server for generation. It does not need to store the generated password for the tool to work.
What is the best password length?
There is no single length that works for every service. Current NIST consumer guidance recommends at least 15 characters. A 16-character random password is a practical starting point, while longer passwords can be used when the website accepts them.
Is a 12-character password strong enough?
A random 12-character password has many possible combinations, but current NIST consumer guidance recommends at least 15 characters. Choose 16 characters or more when the service supports it.
Can I create an 8-character password?
Yes. Select the 8-character preset or enter 8 as the password length. Longer passwords are generally preferable, so use 8 characters only when a website or system gives you a specific reason to do so.
Should I include special characters?
You can include symbols when the website accepts or requires them. Symbols expand the available character pool, but password security also depends on length, randomness, uniqueness, and safe storage.
Can I generate a password without symbols?
Yes. Turn off the Symbols option. This is useful when a website does not permit certain special characters.
Can I generate a password with only letters and numbers?
Yes. Enable uppercase letters, lowercase letters, and numbers, then turn off symbols. The generator will create an alphanumeric password using the selected character groups.
Why would I exclude similar-looking characters?
Characters such as O, 0, I, l, and 1 can be difficult to distinguish visually. Excluding them makes a password easier to read or type manually. It is a usability option rather than a security requirement.
Is a random password better than using my name or birthday?
A randomly generated password is less likely to contain personal information or common patterns. Names, birthdays, phone numbers, and familiar words can be easier to guess or include in targeted password attacks.
Should I reuse a generated password?
No. Generate a different password for each important account. Password reuse allows one exposed credential to put multiple accounts at risk.
Is estimated entropy the same as cracking time?
No. Entropy estimates the size of the possible search space under particular assumptions. It does not tell you exactly how long a real attacker would need because attack conditions vary.
Does this Password Generator create passphrases?
No. This page is designed for random character passwords. Passphrases use multiple words and represent a different generation method, so they are better handled by a dedicated passphrase tool.
Generate a Strong Password When You Need One
The UtilityDocks Password Generator lets you choose the length and character types required by a website, then creates a fresh random password locally in your browser.
For most accounts, start with 16 characters or more, use a unique password for every service, store generated passwords in a trusted password manager, and enable multi-factor authentication when available.
Sources and Security Guidance
Security guidance reviewed September 15, 2026.
UtilityDocks uses current password-security guidance and browser cryptography documentation to support the explanations on this page.
- NIST: Digital Identity Guidelines and Password Guidance
- NIST: How Do I Create a Good Password?
- OWASP: Authentication Cheat Sheet
- MDN Web Docs: Crypto.getRandomValues()
- CISA: Secure Our World
This page focuses specifically on random password generation. Separate tools should be used for passphrases, password strength testing, bulk passwords, WiFi passwords, and password hashing to keep each tool focused on its own purpose.