>Fafa Dev Tools

Hash Generator (MD5, SHA)

Generate MD5, SHA-1, SHA-256, and SHA-512 hashes online. Free hash generator with instant computation.

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MD5: 
SHA-1: 
SHA-256: 
SHA-512:

What is Hash Generator (MD5, SHA)?

A hash function takes an input (any length) and produces a fixed-length output called a hash or digest. It's a one-way function — you cannot reverse a hash back to the original input. Common uses: password storage, file integrity verification, data deduplication, and digital signatures.

How to Use

  1. Enter or paste any text in the input field
  2. All four hash types (MD5, SHA-1, SHA-256, SHA-512) are computed instantly
  3. Each hash result has a copy button to copy individually
  4. Use Clear to reset the input and all results

Examples

MD5 hash

InputHello, World!
Output65a8e27d8879283831b664bd8b7f0ad4

SHA-256 hash

InputHello, World!
Outputdffd6021bb2bd5b0af676290809ec3a53191dd81c7f70a4b28688a362182986f

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Frequently Asked Questions

Which hash algorithm should I use?

SHA-256 or SHA-512 for general purposes (file integrity, data fingerprinting). Bcrypt for passwords (see our Bcrypt Generator). Avoid MD5 and SHA-1 for security-sensitive use — they have known collision vulnerabilities.

What's the difference between hashing and encryption?

Hashing is one-way: you can't reverse a hash to get the original. Encryption is two-way: you can decrypt with the right key. Use hashing for verification and fingerprinting. Use encryption when you need to recover the original data.

Can two different inputs produce the same hash?

Theoretically yes (called a collision), but for SHA-256 the probability is astronomically low. MD5 has demonstrated collisions and should not be used for security purposes.