Skip to main content
Calkulon

Ako vypočítať Password Strength

Čo je Password Strength?

A password entropy calculator measures the cryptographic strength of a password in bits: entropy = log₂(character set size^password length). A 12-character password using upper, lower, digits, and symbols has ~79 bits of entropy. At least 60–70 bits is generally recommended; password managers make using high-entropy passwords practical.

Sprievodca krok za krokom

  1. 1Count character set size
  2. 2Calculate combinations for length
  3. 3Show bits of entropy

Worked Examples

Vstup
12 char password, mixed case+numbers
Výsledok
~79 bits entropy
Measure of password strength

Common Mistakes to Avoid

  • Not double-checking results
  • Ignoring edge cases

Frequently Asked Questions

What does this calculator do?

Input values

How do I use this calculator?

System calculates

Ste pripravení počítať? Vyskúšajte bezplatnú kalkulačku Password Strength

Vyskúšajte sami →

Nastavenia