Hash Generator

Generate MD5 and SHA family hashes locally for verification and integrity checks. All processing stays on your device.

MD5, SHA-1, and SHA-2 variants shown for verification and checksum generation. Do not use MD5/SHA-1 for security-sensitive contexts.

All hashing is performed locally in your browser via Web Crypto (where available).

About Hashing

Hashes are one-way digests used to verify data integrity. For security purposes, avoid MD5/SHA-1; prefer SHA-256 or higher.

  • MD5: Fast checksum, not cryptographically secure.
  • SHA-2: SHA-256/384/512 are widely recommended today.
  • Local-only: This tool uses Web Crypto where available and never uploads your data.

How Hash Functions Work

A cryptographic hash maps input of any size to a fixed-length digest. Good hash functions are deterministic, fast, avalanche (small input change → large digest change), and collision-resistant.

Common Uses

  • File integrity checks and release verification
  • Message authentication (with HMAC)
  • Digital signatures (as a hashing step)
  • Deduplication and quick comparisons

Algorithm Notes

  • MD5: Broken for collision resistance; use for non-security checksums only.
  • SHA-1: Also collision-broken; avoid in new systems.
  • SHA-256/384/512: Recommended SHA-2 variants for general-purpose hashing.
  • Encoding: We hash UTF-8 text input; binary files can be hashed via drag & drop where supported.

Related Tools

  • Base64 Encoder / Decoder – Encode/decode data used in signatures and tokens.
  • JWT Decoder – Inspect token header/payload alongside hashing knowledge.
  • Text Diff – Compare text versions before hashing for integrity checks.

Step-by-Step: Generate a Hash

  1. Enter text (or paste content) into the input area.
  2. Choose an algorithm: MD5, SHA-1, SHA-256, SHA-384, or SHA-512.
  3. Optionally enable Uppercase output.
  4. Copy or download the resulting digest. All processing stays on-device.

Frequently Asked Questions

Is MD5 safe?

MD5 is not considered secure due to known collisions. Use SHA-256 or stronger for security-sensitive tasks.

What is the difference between SHA-256 and SHA-512?

They are both SHA-2 family digests with different output sizes (256 vs 512 bits). SHA-512 can be faster on 64-bit CPUs.

Is hashing the same as encryption?

No. Hashing is one-way and cannot be reversed. Encryption is reversible with a key.

Does this tool upload my data?

No. Hashing is performed locally in your browser using the Web Crypto API when available.