The Online MD5 Generator converts any text into its MD5 hash, a fixed 32-character fingerprint. Type or paste your text, click submit, and copy the result.

The same input always produces the same MD5 hash, and even a one-character change produces a completely different one. That makes MD5 handy for checking whether two pieces of text or data are identical.
MD5 is a one-way hash, not encryption: it cannot be "decrypted" back to the original text, and it does not keep messages secret. It is also no longer considered secure for passwords or digital signatures, because collisions can be produced deliberately and common inputs can be looked up in precomputed tables. For passwords, use modern algorithms such as bcrypt, scrypt or Argon2, and for security-sensitive checksums prefer SHA-256.
MD5 produces a 128-bit hash and is very fast, which is why it is still common for checksums and caching. SHA-256 produces a 256-bit hash and has no known practical collisions, so it is the safer choice when security matters, such as verifying software downloads from untrusted mirrors or signing data. If a publisher lists both, compare the SHA-256 value. For simple duplicate detection in your own data, MD5 is usually fine.
Generate the MD5 of your text or the value you received, then compare it character by character with the reference hash. Because hashes are long, paste both into a text comparison tool or simply check the first and last six characters. If even one character differs, the data is not identical. Remember that MD5 hashes are written in lowercase or uppercase hexadecimal, and both forms represent the same value.
Not mathematically, but short or common inputs can often be found in lookup tables, which is why MD5 is unsafe for passwords.
Yes. "Hello" and "hello" produce different hashes.
Always 128 bits, shown as 32 hexadecimal characters.