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Password Strength Checker

Evaluate password complexity, entropy bits, and estimated crack time client-side.

Security & Cryptography Suite
Password GeneratorPassword Strength CheckerSHA Hash GeneratorMD5 Hash GeneratorBase32 Encoder/DecoderBase58 Encoder/DecoderBase85 Encoder/DecoderRandom String GeneratorSecure UUID GeneratorText Encrypt/Decrypt

Workspace Inputs

Result / Output

Sponsored

What is Password Strength Checker?

Password strength measures a password's resistance to guessing or brute-force hacks based on its information entropy (calculated in bits).

Test passwords client-side. The checker measures entropy parameters without transmitting keys.

How to use the Password Strength Checker

  1. 1Type or paste your password.
  2. 2Review the strength meter (Weak, Medium, Strong, Excellent).
  3. 3Read the estimated cracking time projections.
  4. 4Apply recommendations to strengthen your password.

Benefits & Key Features

  • Calculates Shannon Entropy.
  • Offline validation guarantees password privacy.
  • Illustrates dictionary brute-force estimations.

Frequently Asked Questions

Passwords with an entropy above 60 bits are generally considered secure against standard modern computing clusters, while 80+ bits is exceptionally strong.

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Password Generator

Generate cryptographically secure passwords. Customize length and choose to include numbers, uppercase letters, and symbols.

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SHA Hash Generator

Generate secure SHA-1, SHA-256, and SHA-512 hashes. Secure browser Web Cryptography execution.

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MD5 Hash Generator

Compute 128-bit MD5 hashes. Fast client-side checksum generator for text verification.

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Base32 Encoder/Decoder

Encode plain text to Base32 RFC 4648 format or decode Base32 strings back to text.

base32rfc 4648base32 decoder