Carmedin
Password Entropy Calculator.
See how resistant a password or passphrase is to guessing — plus checks for common passwords, keyboard patterns, and other real weaknesses that raw math alone would miss. Runs entirely in your browser.
Test a password
Calculated entirely in your browserStrength, entropy, character set, weakness checks, and illustrative crack-time estimates will appear here.
Raw entropy is only part of the story.
The calculator combines a character-set entropy estimate with simple checks for weaknesses that make human-created passwords easier to guess.
Entropy estimate
Raw entropy is estimated as length × log₂(character-set size). It describes the theoretical search space if each character were chosen independently from that set.
Real weakness checks
Common passwords (including leetspeak substitutions like "p@ssw0rd"), keyboard walks, repeated characters, and obvious ascending or descending sequences can make a password much weaker than the raw character-set math suggests.
Crack-time assumptions
Displayed times use the stated assumptions of roughly 100 guesses/sec for an online rate-limited attack and 10 billion guesses/sec for a fast offline attack. These are illustrative, not guarantees.
We build the secure systems and policies around how credentials are managed.
One strong password doesn't fix a weak security posture. From identity and access management to infrastructure hardening, that's what we do.