Free · Estimate four common attack speeds

Password Crack Time Estimator

Compare online and offline crack-time estimates without sending the password away.

  • zxcvbn-ts local estimate
  • Password never leaves this tab
  • Password-free reports

Estimate crack time

The checker loads on this device. Your password is never uploaded or put in a report.

1
Enter a test choiceThe field stays in this tab
Private by designRuns with zxcvbn-ts in this browser
2
Read the safe resultReady when you are
Your score will appear here

The result shows strength and patterns, never the password itself.

Three simple steps

How to use it

  1. Enter the password locally.
  2. Compare slow and fast attacks.
  3. Treat every time as an estimate, not a promise.

Your password stays on this device

zxcvbn-ts checks the password inside this browser tab. Bookify does not upload, save, or log it. Results and downloads leave the password out. Crack times are estimates, not guarantees.