Password Generator & Strength Checker
Generate strong passwords, passphrases, PINs — or check how secure your current password is. 4 modes, 100% in your browser.
Choose Mode
Random password, passphrase, or PIN
Configure
Length, characters, separator
Copy & Use
Copy to clipboard with one click
Generate Your Password
Need professional copy for your website?
Generate marketing texts free →Frequently Asked Questions
How long should a secure password be?
At least 12-16 characters. With 16 characters using uppercase, lowercase, numbers, and symbols, it would take billions of years to crack with brute-force.
What is password entropy?
Entropy measures randomness in bits: log2(charset_size^length). Below 40 bits is weak, 60-80 is good, above 80 bits is very strong.
Is the generated password sent to any server?
No. Everything happens in your browser using crypto.getRandomValues(). No data ever leaves your device. You can verify this in the page source.
Can I use this for business passwords?
Yes. It uses the same cryptographic standard (CSPRNG) recommended by security experts. Suitable for business accounts, servers, databases, and any system.
Why not reuse the same password everywhere?
If a site is breached, attackers try the same password on all other sites (credential stuffing). A unique password per account limits the damage.
Random password or passphrase?
Random passwords are more compact and secure per character. Passphrases (e.g. correct-horse-battery-staple) are easier to remember, ideal as a master password for your password manager.
How many different passwords do I need?
One for every account. Use a password manager (1Password, Bitwarden, KeePass) with a strong passphrase as master, and generate random passwords for everything else.
How does the password strength checker work?
The Check tab analyzes your password entirely in your browser. It calculates entropy, checks for character variety (uppercase, lowercase, numbers, symbols), and estimates crack time at 3 speeds: online attack (1K guesses/sec), offline attack (10B/sec), and GPU cluster (1T/sec). Your password never leaves your device.
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