Password Generator

Generate strong, random passwords with custom length and rules.

Click Generate to create a password
16

How to use this tool

1
Open Password Generator
The tool is already loaded above — no download or account needed.
2
Enter your data
Paste or type your input. Results appear instantly.
3
Copy or download
Export your result with one click — ready to use anywhere.
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Why use this tool

100% in-browser
Your data never leaves your device — fully private.
No signup needed
Use any tool instantly without creating an account.
Always free
Every tool is free with no daily limits or paywalls.
Copy & download
Export results in one click, ready to paste anywhere.

FAQ

Are generated passwords stored?
No. Passwords are generated entirely in your browser and never sent to any server.
How long should a password be?
NIST 2024 guidelines recommend a minimum of 15 characters. Length matters more than complexity — a 20-character password of random words is stronger than a 10-character mix of symbols.
What is password entropy?
Entropy measures how unpredictable a password is. A password with 80+ bits of entropy is considered strong. You gain entropy by increasing length and expanding the character set (e.g., adding symbols).
Should I use a password manager?
Yes. A password manager lets you use a unique, long, random password for every service without memorising them all. Bitwarden and 1Password are widely recommended options.
Are passphrases (word-based passwords) secure?
Yes — if they are random. "correct horse battery staple" (4 random words) has more entropy than most complex short passwords. The key is that the words must be chosen randomly, not from a memorable phrase.

About Password Generator

Reusing passwords is the most common cause of account compromise. When any one site you use suffers a data breach, attackers try your email and password on every other site automatically — a technique called credential stuffing. The solution is a unique, randomly generated password for every account. This generator creates them instantly using your browser's cryptographic random number generator, so they are truly unpredictable and never transmitted anywhere.

What Makes a Password Strong

Password strength is measured in entropy — the number of bits of unpredictability. A 12-character password using only lowercase letters has about 56 bits of entropy. Add uppercase, digits, and symbols, and the same 12 characters reach 79 bits. Extend to 20 characters, and entropy exceeds 130 bits — effectively uncrackable with current technology. NIST's 2024 guidance recommends prioritising length over complexity and abandoning mandatory character-type requirements, which lead users to predictable patterns like Password1!.

How to Use Generated Passwords

Generate the password here, copy it, then paste it directly into a password manager (Bitwarden, 1Password, or your browser's built-in manager) and save it alongside the account credentials. Never type a random password from memory — that defeats the purpose. Your master password (for the password manager itself) should be a long passphrase you have memorised: four or more random words selected without any personal connection to you.

Symbols and Site Compatibility

Some websites accept only specific special characters or cap password length at an embarrassingly short limit — a sign the site may be storing passwords insecurely. If a generated password is rejected, try disabling symbols first. If it is still rejected, the site likely has a character limit; shorten the password. Never use a password shorter than 16 characters for any account containing personal or financial information.

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