Hash Generator

Generate SHA-256, SHA-512, SHA-1, MD5 and CRC32 hashes of any text, privately in your browser.

Text to hash	hello world
Letters	lowercase

Text to hash

Letters

SHA-256

b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9

Hashes of 11 bytes of UTF-8 text, computed in your browser; nothing is uploaded. MD5 and SHA-1 are broken for security; use SHA-256 or better.

All hashes

Algorithm	Hash
SHA-256	b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9
SHA-512	309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
SHA-1	2aae6c35c94fcfb415dbe95f408b9ce91ee846ed
MD5	5eb63bbbe01eeed093cb22bb8f5acdc3
CRC32	0d4a1185

About the Hash Generator

Type or paste text to see its MD5, SHA-1, SHA-256 and SHA-512 hashes, in lower or upper case. Everything runs in your browser.

A hash function turns any input into a fixed-length fingerprint; changing one character changes the whole hash. Hashes verify downloads and detect changes. SHA-256 and SHA-512 (the SHA-2 family) are secure today; MD5 and SHA-1 have known collisions and should only be used for non-security checksums. Passwords should be stored with slow, salted algorithms such as Argon2 or bcrypt, not plain hashes.

The formula

SHA-256("abc") = ba7816bf…f20015ad (FIPS 180-4 test vector)

Worked example

“hello world”

11 bytes of UTF-8
SHA-256 begins b94d27b9…
Change one letter and the whole hash changes

Questions people ask

Can a hash be reversed?

Not mathematically, but short or common inputs can be guessed from lookup tables.

Does it hash files?

This tool hashes text; use your operating system's checksum tool for files.