Verificador de Força de Senha

Ferramenta online gratuita test your password strength instantly with real-time analysis. get entropy scores, crack time estimates, and actionable security tips. free online, private, no sign-up.

O que é Verificador de Força de Senha?

A powerful developer tool designed to help you work more efficiently. Password Strength Checker provides accurate results instantly with a clean, intuitive interface. Perfect for developers, engineers, and IT professionals.

Fórmula

entropia (bits) = Length × log₂(Pool Size)

Pool Size = 26 (lower) + 26 (upper) + 10 (digits) + 33 (special) = 95 max

Score based on: length (50%), case mixing (15%), digits (15%), special chars (20%)

Como calcular

Enter your input in the field above.
Configure any available options to customize the output.
View the results instantly with real-time updates.
Copy or export your results for use in your projects.

Exemplo

The senha "Tr0ub4dor&3" scores ~56 bits of entropia (Good). It would take days to months to crack. A better approach: "blue-elephant-dances-midnight" has ~98 bits (Very Strong).

Benefícios Principais

Get accurate results instantly in your browser.
Save time with real-time calculations as you type.
No data leaves your device - complete privacy.
Free to use on any device, no sign-up required.

Erros Comuns a Evitar

usando dictionary words or comum phrases
Substituir letras por caracteres semelhantes (ex. 0 por O)
usando personally identifiable informatoion
Criar senhas muito curtas ou simples

Dicas Profissionais

uso passphrases — long sentences that are easy to remember
Never reuso senhas across different accounts
Ative 2FA on all accounts that support it
uso a senha manager to gerar and store unique senhas

Termos Chave Explicados

entropia: Measure of unpredictability in bits
Ataque de força bruta: tentar cada combinação
Dictionary attack: Trying comum words/phrases
Frase-senha: uma senha feita de várias palavras

Casos de uso comuns

Testing new senhas before uso
Evaluating existing senha força
Learning senha security best practices
Auditar políticas de senhas organizacionais

Perguntas Frequentes

How is senha força calculated?

força is calculated usando entropia (bits of aleatórioness), length, character diversity, and padrão analysis. Higher entropia and diverse characters result in stronger senhas.

What is a good entropia score?

entropia above 60 bits is good, above 80 bits is strong, and above 100 bits is very strong. A 12-character mixed-type senha typically scores 70+ bits.

Por que o comprimento é mais importante que a complexidade?

Length exponentially increases senha força. A 20-character lowercase-only senha (95 bits) is stronger than a 10-character mixed-type senha (66 bits). Length always wins.

Is this ferramenta storing my senha?

No. All analysis happens in seu browser. For security, consider typing a similar senha rather than seu actual one.

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