SHA-512 Hash Generator

Hash text or files to SHA-512 instantly — runs entirely in your browser

Or hash a file (max 100 MB)

SHA-512: The Bigger Sibling of SHA-256

SHA-512 belongs to the same SHA-2 family as SHA-256 but produces a 128-character (512-bit) hash instead of 64 characters. Enter any text above — or choose a file — and get its SHA-512 fingerprint instantly, in both lowercase and uppercase hex formats.

SHA-512 is common in Linux password shadow files (the $6$ prefix), JWT HS512 signatures, long-term archive checksums and certificate infrastructure. Interestingly, on modern 64-bit processors SHA-512 is often faster than SHA-256 for large inputs, because it processes data in 64-bit words — a practical reason some systems prefer it for file verification.

When to choose SHA-512 over SHA-256

Both are considered secure today. Choose SHA-512 when a system explicitly expects it, when hashing large files on 64-bit hardware, or when maximum hash length is required by policy. Choose SHA-256 for wider compatibility and smaller storage. Like all our developer tools, hashing happens fully in your browser via the Web Crypto API — nothing is uploaded.

Frequently Asked Questions

Output length (64 vs 128 hex characters) and internal word size (32-bit vs 64-bit). Both are secure SHA-2 algorithms; SHA-512 can actually be faster on 64-bit CPUs for large inputs.
512 bits, shown as 128 hexadecimal characters. The length is always the same regardless of input size — a one-word input and a 1 GB file both produce 128 characters.
Yes — use the file option below the text box (up to 100 MB). The file is read and hashed locally in your browser; it never leaves your device.
Linux password hashing (sha512crypt), JWT HS512 tokens, long-term archival checksums, and anywhere policy requires the largest SHA-2 output.

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