What Is This Tool?
MD5 is a hash function that turns any input into a fixed 32-character hexadecimal fingerprint. The same input always produces the same hash, and even a one-character change produces a completely different result. This makes hashes useful for checksums, cache keys, deduplication and data integrity checks.
Security note: MD5 is cryptographically broken — collisions can be manufactured — so it must not be used for passwords or signatures. For those, use SHA-256 (also provided below) or dedicated password hashing like bcrypt. MD5 remains fine for non-security uses like checksums and cache keys.
Why Use It?
- Generate checksums to verify a file or string wasn't accidentally changed.
- Create deterministic cache keys and deduplication IDs.
- Compare against a known MD5 to check data integrity.
- Get SHA-1 and SHA-256 alongside — no need for a second tool.
- 100% local: your input never leaves the browser.
How to Use
- Type or paste your text into the input box.
- Click "Generate Hash".
- Read the MD5, SHA-1 and SHA-256 results (check "Uppercase" if your system expects capital letters).
- Click "Copy" next to the hash you need.
Example
Input
helloOutput
MD5: 5d41402abc4b2a76b9719d911017c592
SHA-256: 2cf24dba5fb0a30e26e83b2ac5b9e29e1b161e5c1fa7425e73043362938b9824Hashes are deterministic: "hello" produces these exact values on every tool, every time.
Frequently Asked Questions
Can I decrypt an MD5 hash back to the original text?
No — hashing is one-way by design; the original cannot be computed from the hash. "MD5 decryption" sites just look hashes up in giant precomputed tables of common inputs, which is why unique inputs can't be reversed.
Is MD5 safe for storing passwords?
No, absolutely not. MD5 is fast to brute-force and has known collision attacks. Use bcrypt, scrypt or Argon2 for passwords. MD5 is only acceptable for non-security purposes like checksums.
Why does the same text give a different hash than another tool?
Usually invisible differences: a trailing newline or space, different line endings (\r\n vs \n), or different text encoding. Byte-identical input always gives an identical hash.
What's the difference between MD5, SHA-1 and SHA-256?
They differ in output length and security: MD5 (128-bit) and SHA-1 (160-bit) are both broken for security use; SHA-256 (256-bit) is the current standard and remains secure. When in doubt, use SHA-256.
Is my text sent to a server for hashing?
No. MD5 is computed with JavaScript and SHA-1/SHA-256 with your browser's built-in Web Crypto API — everything stays on your device.