Password Fortress

Random Password Generator

Length

Quantity

Selected sets define the allowed pool; each selected class is not guaranteed to appear in every password. For authentication, follow the target service's own password policy.

Password Structure Check

Password to inspect locally

—

0

Characters

0

Observed class pool

0

Naive upper-bound bits

0

Local heuristic / 100

The “naive bits” value is length × log₂(observed character-class pool), which assumes uniform random selection. That assumption is generally false for human-chosen passwords, so the value can substantially overstate real resistance to guessing. This checker does not test compromised-password databases.

Custom-wordlist Passphrase Generator

Number of words

Separator

Capitalize each word Append 2-digit number Append symbol

This is not the official Diceware list. It uses a bundled 100-word custom list, so each uniformly selected word contributes about log₂(100) ≈ 6.64 bits of generated search space. The displayed estimate applies only to phrases generated here under this model.

🔐 Password Fortress

Random Password Generator

Password Structure Check

Custom-wordlist Passphrase Generator