Why Strong, Random Passwords Matter
Every year, billions of usernames and passwords leak from hacked websites. Attackers feed these lists into automated tools that try common passwords and reused credentials on email, banking, social media and shopping sites. Passwords like Rahul@123 or India2026 fall within seconds because they follow predictable patterns.
A long, random password has no pattern to guess. This generator creates one in your browser using a cryptographically secure random source, with options for length, character types and readability.
How to Use the Password Generator
- Set the Password Length with the slider (4 to 64 characters). 16 or more is a good default.
- Choose which characters to include: uppercase, lowercase, numbers and symbols.
- Turn on Exclude Ambiguous Characters if you will need to read or type the password manually.
- Check the strength meter, then copy the password. Generate a new one as many times as you like.
Some websites have their own rules, such as “no symbols” or “maximum 20 characters”. Adjust the options to match.
What Makes a Password Strong?
Password strength is often measured in bits of entropy — roughly, how many guesses an attacker would need. Each extra bit doubles the number of possibilities.
| Password type | Approx. entropy | Verdict |
|---|---|---|
| 8 lowercase letters | ~38 bits | Weak |
| 8 letters + numbers | ~48 bits | Weak to fair |
| 12 characters, all types | ~78 bits | Strong |
| 16 characters, all types | ~104 bits | Very strong |
| 20 characters, all types | ~130 bits | Excellent |
These figures only apply to randomly generated passwords. A password based on a name, date of birth, mobile number or keyboard pattern is far weaker than its length suggests, because attackers try those first.
Password Habits That Keep You Safe
- Never reuse passwords, especially for email and banking. Your email can reset every other account.
- Turn on two-factor authentication (2FA) wherever possible. An authenticator app is safer than SMS codes.
- Use a password manager to store and fill passwords, so you don’t need to remember them.
- Never share OTPs or passwords over phone calls, SMS or WhatsApp — banks and genuine companies will never ask for them.
- Change a password immediately if a service you use reports a data breach.
How This Generator Works
The tool uses crypto.getRandomValues(), the browser’s cryptographically secure random number generator, rather than Math.random(), which is not designed for security. Each character is picked without bias from the character sets you select, at least one character from every selected set is included, and the result is shuffled. The whole process happens on your device — nothing is transmitted, logged or stored.
Related Tools
- SHA-256 Generator — learn how passwords are hashed.
- MD5 Generator — and why MD5 is no longer safe for passwords.
- Base64 Encoder — and why encoding is not encryption.