learn.howToCalculate

learn.whatIsHeading

A password generator creates cryptographically random passwords of specified length and character set, and calculates the entropy (strength) of the generated password.

공식

Entropy = L × log₂(N) bits

L: password length; N = character set size — password length; N = character set size
N: character set size — character set size

단계별 가이드

1Entropy = L × log₂(N) bits
2L = password length; N = character set size
370+ bits is considered secure for most uses
4Longer is always stronger — prefer 16+ characters

풀어진 예시

입력

16 characters, all printable ASCII (95 chars)

결과

Entropy = 16 × log₂(95) = 104.9 bits — very strong

자주 묻는 질문

What is Random Password?

A password generator creates cryptographically random passwords of specified length and character set, and calculates the entropy (strength) of the generated password. Use this calculator for accurate, instant results.

How accurate is the Random Password calculator?

The calculator uses the standard published formula for random password. Results are accurate to the precision of the inputs you provide. For financial, medical, or legal decisions, always verify with a qualified professional.

What units does the Random Password calculator use?

Enter values in the units shown in each input field. The calculator displays results in standard units and shows the calculation steps.

What formula does the Random Password calculator use?

The core formula is: Entropy = L × log₂(N) bits. Each step in the calculation is shown so you can verify the result manually.

계산할 준비가 되셨나요? 무료 Password Generator 계산기를 사용해 보세요

직접 시도해 보세요 →