Question 1

What is the difference between MD5 and SHA-256?

Accepted Answer

MD5 produces a 128-bit (32-character) hash and is considered cryptographically broken — it should not be used for security. SHA-256 produces a 256-bit (64-character) hash and is currently secure. For any security-sensitive application, use SHA-256 or SHA-512.

Question 2

Can you decrypt or reverse a hash?

Accepted Answer

No. Hash functions are one-way by design. You cannot "decrypt" a hash. If you need reversible encryption, use our Advanced Encryption tool instead.

Question 3

Which hash algorithm should I use?

Accepted Answer

For security: SHA-256 or SHA-512. For checksums/file integrity: MD5 or SHA-1 are acceptable. For passwords: use bcrypt or Argon2 (not supported here as they are salted). This tool provides raw hash generation suitable for data verification.

MD5/SHA Hash Generator - Free Online Hash Calculator

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