Password Generator
Create strong, random passwords that are virtually impossible to crack. Customize length, character types, and copy with one click.
Password Generator — Free Strong Password Creator: Generate strong, secure, random passwords with custom length and character options. Includes strength meter, entropy calculation, and one-click copy.
How to Generate a Strong Password
Set Your Preferences
Adjust the length slider and toggle character types: uppercase, lowercase, numbers, symbols. Exclude ambiguous characters if you'll be typing the password manually.
Check the Strength
The color-coded strength meter and entropy score tell you exactly how secure your password is. Aim for "Strong" or "Very Strong" for important accounts.
Copy and Store
Click Copy to save your password to the clipboard. Store it in a trusted password manager — never write passwords in plain text files or sticky notes.
What Is a Password Generator?
A password generator creates random strings of characters that serve as passwords for your online accounts. The critical word here is "random" — most people are terrible at creating truly random passwords on their own. Studies consistently show that when asked to create a "random" password, humans gravitate toward predictable patterns: pet names followed by birth years, keyboard walks like "qwerty123," or simple word-number combinations like "Password1!".
These patterns are exactly what brute-force and dictionary attack tools are designed to exploit. A password like "Summer2024!" looks complex to a human, but an attacker's software cracks patterns like that in minutes. A truly random 16-character password with mixed character types, on the other hand, would take centuries to crack using current hardware — even with dedicated GPU clusters.
This generator uses the Web Crypto API, the same cryptographic random number source that browsers use for TLS/SSL encryption. That means the randomness is genuine and unpredictable, not the pseudo-random Math.random() function that some simpler tools rely on. The entropy calculation shows you exactly how many bits of randomness your password contains, giving you a concrete measure of security rather than a vague "strong" or "weak" label.
One practical tip: enable the "Exclude ambiguous characters" option when generating passwords you'll occasionally need to type by hand — at hotel WiFi portals, for example. Characters like O/0, l/1/I look identical in many fonts, and getting them wrong is a frustrating experience you can easily avoid.
Why Use Our Password Generator?
Cryptographic Randomness
Uses the browser's native Web Crypto API for true randomness — the same source used for SSL/TLS encryption. No pseudo-random shortcuts.
Real Entropy Calculation
See the exact bit-entropy of your password, so you know precisely how resistant it is to brute-force attacks. No guessing involved.
Nothing Sent to Servers
Your password is generated entirely in your browser. It's never transmitted, logged, or stored anywhere — because security demands nothing less.
Fully Customizable
Control every aspect: length from 4 to 128 characters, include or exclude specific character types, and filter out visually ambiguous characters.
Frequently Asked Questions
At minimum, use 12 characters with mixed types. For high-security accounts (email, banking, cloud storage), 16–20 characters is considerably safer. Each additional character exponentially increases the time needed for brute-force attacks. A 20-character password with all character types has over 130 bits of entropy — effectively uncrackable.
Entropy measures randomness in bits. Higher entropy means more possible combinations an attacker would have to try. A password with 60 bits of entropy has about 1.15 quintillion possible combinations. At 80+ bits, it's essentially immune to brute-force attacks with any foreseeable computing technology.
Generally, yes. A 20-character password using only lowercase letters (about 94 bits of entropy) is stronger than a 10-character password using all character types (about 66 bits). Length contributes more to security than complexity. That said, combining both length and complexity gives you the best protection.
Absolutely, without exception. When one service gets breached (and breaches happen regularly), attackers immediately try those leaked credentials on other platforms. If you reuse the same password across sites, one breach compromises everything. Use a password manager to store unique passwords for each account.
No. The password exists only in your browser's memory while the page is open. We have zero server-side logging, no analytics on generated passwords, and no way to retrieve what you've generated. Close the tab and it's gone permanently — which is exactly how a password generator should work.