🔒 MD5 Hash Generator

Generate MD5 hash online, supports 32-bit and 16-bit output

⚠️ MD5 is no longer secure, not recommended for password encryption. Please use SHA-256 or stronger algorithms to protect sensitive information.

Input Text

Output Format

MD5 Hash

All Formats

📚 User Guide

What is MD5?

MD5 (Message-Digest Algorithm 5) is a widely used cryptographic hash function that can produce a 128-bit (16 bytes) hash value, used to ensure message integrity.

MD5 Features

Same input always produces same output
Output length fixed at 128 bits (32 hexadecimal characters)
Irreversible (cannot restore original from hash)
Fast computation
Small input change causes huge output difference

Suitable Use Cases

File integrity verification
Digital signatures
Data deduplication
Unique identifier generation

Not Suitable For

❌ Password encryption (proven insecure)
❌ Sensitive information protection
❌ Security authentication systems

Security Tips

MD5 has proven collision vulnerabilities and is no longer suitable for high-security scenarios. Recommended alternatives:

Password encryption: Use bcrypt, scrypt or Argon2
Data integrity: Use SHA-256 or SHA-3
Digital signatures: Use RSA or ECDSA

Output Format Description

32-bit: Complete MD5 hash (128 bits, 32 hexadecimal characters)
16-bit: Middle 16 bits of 32-bit MD5 (for compatibility with legacy systems)