· 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.
Generate Adler-32 checksums from text or uploaded files. Adler-32 is built for speed rather than security, and it runs inside your own browser.
Generate MD5 digests from text or uploaded files: 128 bits, 32 hexadecimal characters. MD5 is cryptographically broken and is for legacy use only.
Generate MD4 digests from text or uploaded files for legacy compatibility. MD4 is cryptographically broken. It all runs inside your browser.
Generate Keccak-224, Keccak-256, Keccak-384 or Keccak-512 hashes from text or uploaded files. It runs in your browser, so nothing leaves the device.
Generate BLAKE3 hashes from text or uploaded files, 256-bit by default and any length up to 1,048,576 bytes, with optional keyed hashing.
Generate BLAKE2s digests at 128, 160 or 256 bits, or any length from 1 to 32 bytes, from text or uploaded files. It runs inside your browser.
Generate BLAKE2b digests at 128, 256, 384 or 512 bits, or any length from 1 to 64 bytes, from text or uploaded files. It runs inside your browser.
Generate SHAKE128 or SHAKE256 extendable-output hashes of 1 to 1,048,576 bytes from text or uploaded files. It all runs inside your own browser.
Generate SHA3-224, SHA3-256, SHA3-384 or SHA3-512 digests from text or uploaded files. Everything runs inside your own browser, on your device.
Generate SHA-512/224, SHA-512/256 or full SHA-512 digests from text or uploaded files. Everything runs inside your browser, on your own device.
Generate SHA-384 digests from text or uploaded files. Everything runs inside your own browser, so the data you paste never leaves the device.
Generate SHA-256 digests from text or uploaded files: 256 bits, 32 bytes, 64 hexadecimal characters. It all runs inside your own browser, on your device.
Generate SHA-224 digests from text or uploaded files. Everything runs inside your own browser, so the data you paste never leaves the device.
Generate SHA-1 digests from text or uploaded files: 160 bits, 40 hexadecimal characters. SHA-1 is not suitable for new security-sensitive uses.