Cryptography
Password/Passphrase Generator
Generate passwords or passphrases with CSPRNG-backed unbiased selection, character groups, exclusions, and a live entropy estimate.
Free to use — no sign-up or login.
Runs entirely in your browser; input is not sent to our servers.
Messages, keys, passwords, plaintext, ciphertext, and files are never stored in
localStorage, history, or analytics payloads.
Password: 4–256 characters. Passphrase: 2–24 words (try 6).
Generated value
Estimated entropy (bits)
Compare with the Password Entropy Calculator.
This free Password/Passphrase Generator covers Generate passwords or passphrases with CSPRNG-backed unbiased selection, character groups, exclusions, and a live entropy estimate.
Enter the Password/Passphrase Generator fields, then read the output. Cryptography calculators on this site keep the formula visible beside the form, with no account required.
Using the Password/Passphrase Generator
Generate passwords or passphrases with CSPRNG-backed unbiased selection, character groups, exclusions, and a live entropy estimate. Typical inputs are Style, Length / word count, Character groups and Exclude characters. How it works beside the form states the identity the Password/Passphrase Generator applies.
FAQ
How do I use the Password/Passphrase Generator?
Open the Password/Passphrase Generator, fill Style, Length / word count, Character groups and Exclude characters, and read the result. Set length or word count, character groups, and exclusions. Entropy links conceptually to the Password Entropy Calculator.
What formula does the Password/Passphrase Generator use?
The Password/Passphrase Generator uses the identity in How it works. In words: Set length or word count, character groups, and exclusions. Entropy links conceptually to the Password Entropy Calculator.