MD5 Hash Generator computes the MD5 digest of text you enter, entirely in your browser. MD5 is broken for any security purpose: it is vulnerable to practical collision attacks, so use it only for non-adversarial checksums, never for passwords or integrity against a motivated attacker.
How to read the result
The output is the 32-character hexadecimal digest of the input. Two different inputs producing the same digest (a collision) is computationally easy for MD5 today, which is exactly why it must not be trusted where an attacker controls or can influence the input.
Defender tips
- Never store passwords as a bare MD5 hash; use a purpose-built password hash with a work factor (argon2id, bcrypt or scrypt) instead.
- Do not rely on an MD5 checksum to prove a file has not been tampered with by an adversary; use SHA-256 or better, or a signed checksum, when the file's integrity matters against an attacker.
- MD5 for non-adversarial deduplication or cache keys is still fine; the risk is specifically when the input could be crafted by someone trying to defeat the check.
FAQ
Is MD5 safe to use?
Not for anything security-relevant. Collision attacks against MD5 are practical and well documented; it should not be used for passwords, digital signatures, or integrity checks where an attacker might supply the input.
Why is it still used anywhere?
Mostly legacy systems and non-adversarial uses, like deduplication or cache keys, where nobody is trying to forge a matching input.
Does this hash a whole file, or just text?
This tool hashes the text you type or paste; it is not a file-hashing utility.