JavaScript MD5
MD5 turns any string into a fixed 32-character hexadecimal fingerprint. The same input always yields the same hash, but you cannot reverse a hash back to the input. Note: MD5 is a checksum, not a secure password hash.
Syntax
md5(str)Examples
| Input | Arguments | Output |
|---|---|---|
| "hello" | — | "5d41402abc4b2a76b9719d911017c592" |
| "" | — | "d41d8cd98f00b204e9800998ecf8427e" |
| ↳ Even an empty string has a hash. | ||
When to use it
- Generate a stable cache key or ETag from content.
- Detect whether a file or string changed (checksum).
Gotchas
- MD5 is cryptographically broken. Never use it to store passwords. Use bcrypt/argon2 server-side for that.
Try it live
Type your input and see MD5 transform it instantly.
Want to go further? Chain MD5 with other functions, pipe one output into the next and watch your data transform in the visual Playground.