What is MD5 Hashing?
MD5 (Message Digest Algorithm 5) produces a 128-bit (32-character hex) hash from any input. While MD5 is no longer considered cryptographically secure due to known collision vulnerabilities, it remains widely used for checksums, cache keys, and non-security applications. This tool generates MD5 hashes from text or files with HMAC support.
Common use cases
- Generating file checksums for integrity verification
- Creating cache keys from content strings
- Verifying downloaded files against published MD5 sums
- Computing quick hashes for deduplication
- Legacy system compatibility where MD5 is required
How to use
- 1Type or paste text, or switch to File and drop a file.
- 2The MD5 digest is shown first; switch the output to upper-case hex or Base64 if you need it.
- 3Copy the MD5, or use Verify to check a file against a published MD5 checksum.
Frequently asked questions
Is MD5 still safe to use?
For security purposes (passwords, signatures), no — MD5 has known collision attacks. For non-security uses like checksums, cache keys, and content deduplication, MD5 is still practical and fast. Use SHA-256 for anything security-sensitive.
How long is an MD5 hash?
An MD5 hash is always 128 bits, typically displayed as a 32-character hexadecimal string like d41d8cd98f00b204e9800998ecf8427e.