Generate strong, secure passwords, memorable passphrases, and PINs, then check password strength. Shows true entropy in bits and estimated crack time, free, local only, nothing stored.
A password generator and strength checker in one. Create cryptographically random passwords up to 64 characters, memorable passphrases (word-based), or numeric PINs, then see the exact entropy in bits and how long a modern attacker would take to crack it. Everything runs in your browser using the Web Crypto API, so no password is ever sent, logged, or stored.
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Create random, high-entropy passwords with control over length and character sets, then check any password's strength against length, variety, and common-pattern weaknesses. It's two essential security tasks, creation and evaluation, in one place.
Choose Password for random character strings, Passphrase for memorable word chains (easier to type and remember), or PIN for numeric codes.
Drag the length slider and toggle uppercase, lowercase, numbers, and symbols. Enable 'No look-alikes' to drop easily confused characters like O/0 and l/1.
Click Generate. The panel shows entropy in bits, a strength label, and an estimated crack time assuming a fast modern GPU attacker.
Use the copy button, then paste the password into your password manager. Use a unique password for every account so one breach can't compromise others.
Passwords are generated and analyzed entirely in your browser and are never transmitted or stored, so nothing you type is logged. Pair a unique generated password with a password manager for each account to shut down credential-stuffing and reuse attacks.
A strong password should be: at least 12 characters long, include uppercase and lowercase letters, numbers, and symbols, and not contain dictionary words or personal info. This generator creates cryptographically random passwords following all these rules.
Password security comes from entropy (randomness). A 16-character password using letters, numbers, and symbols has over 95^16 possible combinations, taking billions of years to crack by brute force with current computers.
Minimum 12 characters for personal accounts, 16+ for financial and work accounts. Longer is always better. A 12-character complex password takes centuries to crack; a 6-character password can be cracked in minutes.
No. All password generation runs locally in your browser's memory. The generated passwords are never sent to any server, logged, or stored anywhere. When you close the page, the passwords are gone.
Yes. Password managers let you use a unique, strong password for every site without memorizing them. This is far safer than reusing the same password, if one site is breached, your other accounts stay safe.
Type your password into the output field. It calculates the entropy in bits from length and character variety, then shows a strength label (Vulnerable / Standard / High-Grade / Fortified) and an estimated time to crack by brute force.
A passphrase strings together random words (like 'Cable-River-Oak-Mint-42'). It's easier to remember and type than a random string, and a 5-6 word passphrase can exceed 70 bits of entropy, stronger than most manually-created passwords, while staying human-friendly.
Entropy measures unpredictability. Each bit doubles the number of guesses an attacker must make. 40 bits is weak, 60-70 bits is good, and 80+ bits is effectively uncrackable with today's hardware. This tool shows the exact bit count for whatever you generate or type.
Enable 'No look-alikes' when a password will be typed or read aloud, it removes easily confused characters (O vs 0, l vs 1, I). It slightly lowers entropy per character, so bump the length up a little to compensate. For manager-stored passwords you can leave it off.
The strength checker estimates crack time from the password's length and character variety, so you can see the difference a longer, more varied password makes. The estimate is calculated in your browser and nothing you type is sent anywhere.
Length matters most: aim for 16 or more characters mixing upper- and lower-case letters, numbers and symbols, and make it unique per account. A long passphrase of random words is both strong and easier to remember.
It is generated entirely in your browser using a secure random source and is never transmitted, logged or stored, so it is safe to create passwords for real accounts here.
No. Generation and strength checking happen entirely in your browser; nothing is saved or transmitted.
Aim for at least 12-16 characters. Length adds more security than complexity, so longer passphrases are both stronger and easier to remember.
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