SHA512 Hash Generator computes the SHA-512 message digest of any text, producing a 128-character hexadecimal hash using your browser's built-in Web Crypto API. SHA-512 offers the highest collision resistance in the SHA-2 family and is particularly fast on 64-bit processors, making it the preferred choice for high-security key derivation, HMAC-SHA512 signatures, and integrity verification of large data sets.
SHA-512 is part of the SHA-2 family, processing input through 80 compression rounds (vs 64 for SHA-256) and producing a 512-bit (64-byte) digest as 128 hex characters. On 64-bit hardware, SHA-512 is often faster than SHA-256 because modern 64-bit CPUs process SHA-512's 64-bit word operations natively.
SHA-512 produces a 128-character hash (512 bits) vs SHA-256's 64-character hash (256 bits). SHA-512 has a larger security margin and can be faster on 64-bit CPUs, but SHA-256 is sufficient for most applications.
Yes. SHA-512 has no known practical attacks. It is approved by NIST for all security applications and exceeds the security requirements of current and near-future cryptographic needs.
No. SHA-512 is a one-way function. No preimage or collision attacks are known.
No. Hashing uses your browser's Web Crypto API (crypto.subtle.digest). Your input never leaves your device.
For most applications, SHA-256 is sufficient and more widely supported. Use SHA-512 when you specifically need a larger hash output, faster hashing on 64-bit hardware, or higher collision resistance for sensitive applications.
Yes, completely free. No account required.
Tool workspace
Free SHA-512 hash generator online — instantly compute SHA512 checksums for any string. 128-character hex output. Stronger than SHA-256 for high-security applications. No login.
Input
hello
Output
9b71d224bd62f3785d96d46ad3ea3d73319bfbc2890caadae2dff72519673ca72323c3d99ba5c11d7c7acc6e14b8c5da0c4663475c2e5c3adef46f73bcdec043
