· encryption
Generate FNV-1 or FNV-1a 32-bit and 64-bit non-cryptographic hashes from text or uploaded files. It all runs inside your browser, on your device.
Encryption
A hash turns any input into a short, fixed-length fingerprint. The same input always gives the same digest, and changing a single byte gives a different one. That makes hashes the standard way to check a download, compare two files or store a password without keeping the password itself.
This category covers the SHA-2 and SHA-3 families, BLAKE2 and BLAKE3, Keccak and SHAKE, and the legacy MD4, MD5 and SHA-1 for older systems that still expect them. For error detection there are CRC-32, CRC-64, Adler-32 and FNV checksums. Keyed and password hashing come with matching verifiers: HMAC, and Argon2id. ROT13 and ROT47 sit here too, as simple letter rotation ciphers.
Tools marked Runs in your browser hash your text and files on your own device.
17 public tools
Generate FNV-1 or FNV-1a 32-bit and 64-bit non-cryptographic hashes from text or uploaded files. It all runs inside your browser, on your device.
Generate CRC-64 checksums from text or uploaded files using the XZ, ECMA-182, Go-ISO, MS, NVMe, Redis or WE variant. It all runs in your browser.
Generate CRC-32 checksums from text or uploaded files using ISO-HDLC, CRC-32C, BZIP2, MPEG-2, cksum and six more named variants, in your browser.