Generate MD5 hashes instantly from any text input. Useful for checksums, data integrity verification and legacy hash comparisons. Runs 100% in your browser using the CryptoJS library.
Type or paste the text you want to hash into the input field. The MD5 hash updates in real time as you type. You can hash anything from a single character to a full document.
Click Copy next to the output to copy the 32-character hexadecimal MD5 hash to your clipboard. You can also toggle between uppercase and lowercase output.
Paste a known MD5 hash into the Compare field to instantly check if your input text matches the expected hash — useful for verifying file checksums or password hash comparisons.
MD5 (Message Digest Algorithm 5) is a hash function that produces a fixed 128-bit (32 hexadecimal character) hash from any input. It was designed as a one-way function — given the hash, it is computationally infeasible to recover the original input. The same input always produces the same hash; any change to the input, even a single character, produces a completely different hash.
No. MD5 is considered cryptographically broken and should not be used for password hashing or security-critical applications. Researchers have demonstrated practical collision attacks (two different inputs producing the same hash), and rainbow tables (precomputed hash lookups) can reverse common MD5 hashes in seconds. Use bcrypt, scrypt, or Argon2 for password hashing.
Despite its cryptographic weaknesses, MD5 is still widely used for non-security purposes: file integrity checksums (verifying a downloaded file is not corrupt), identifying duplicate files by content, database fingerprinting for deduplication, and legacy system compatibility where MD5 was baked in and migration is impractical.
MD5 is a deterministic function — the same input always produces the same output. This is a fundamental property of all hash functions. This makes MD5 useful for integrity verification (you can re-hash the original and compare), but also means that common inputs like passwords can be pre-computed into lookup tables.
A collision occurs when two different inputs produce the same MD5 hash. MD5 was designed to make collisions computationally infeasible, but researchers found practical collision attacks in 2004. This means two different files could be crafted to have the same MD5 hash, making MD5 unreliable for security applications. SHA-256 and SHA-3 are collision-resistant alternatives.
An MD5 hash is always exactly 128 bits, represented as 32 hexadecimal characters (each hex character = 4 bits). The output length never varies regardless of the input length — whether you hash one character or a 10 GB file, the output is always 32 hex characters.
