Online MD5 Hash Generator
MD5 (Message-Digest Algorithm 5) produces a 128-bit hash value (32 hexadecimal characters) from any input. Paste your text below and click the button to get its MD5 hash — everything is computed on your device and never sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
hello world
Example Output
5eb63bbbe01eeed093cb22bb8f5acdc3
How to Use
- 1Type or paste the text you want to hash into the Input field.
- 2Click the Generate Hash button (or press Ctrl+Enter) to compute the MD5 hash.
- 3The MD5 hash appears in the Output field. Click the Copy button to copy it to your clipboard.
- 4Use the Clear button to empty the fields and start over.
About MD5
MD5 (Message-Digest Algorithm 5) is a cryptographic hash function designed by Ronald Rivest in 1991. It takes an input of any length and produces a fixed 128-bit digital "fingerprint", usually shown as 32 hexadecimal characters.
How it works: MD5 processes data in 512-bit blocks through four rounds of mathematical operations (modular addition, bit rotation, and logical functions). The result is deterministic — the same input always yields the same hash — yet changing a single character changes the hash drastically (the avalanche effect).
MD5 was once popular for file integrity verification and password storage. However, since the discovery of collision attacks (two different inputs producing the same hash), MD5 is no longer safe for security purposes. Today it remains useful for fast checksums and detecting changes in non-sensitive data, but not for serious cryptography.
FAQ
Is MD5 safe for storing passwords?
No. MD5 is considered cryptographically broken and vulnerable to collisions. For storing passwords, use algorithms like bcrypt or Argon2. MD5 is still useful for checksums and verifying the integrity of non-sensitive files.
Is my data sent to a server?
No. The MD5 hash is computed entirely in your browser using JavaScript. The text you enter never leaves your device.
Can an MD5 hash be reversed to the original text?
Not directly. MD5 is a one-way function, so it cannot be "decrypted". However, for short or common inputs, a hash can be matched via rainbow tables — which is why MD5 is not suitable for sensitive data.
How long is an MD5 hash?
An MD5 hash is always 128 bits long, displayed as 32 hexadecimal characters, regardless of the input length.