Online SHA-512 Hash Generator
SHA-512 is the strongest member of the SHA-2 family, producing a 512-bit hash value (128 hexadecimal characters). It uses 64-bit operations, making it both efficient and secure. Paste your text and click the button to compute its SHA-512 hash — everything runs on your device and is never sent to a server.
Everything runs in your browser. Your data is never sent to our servers.
Example
Example Input
hello world
Example Output
309ecc489c12d6eb4cc40f50c902f2b4d0ed77ee511a7c7a9bcd3ca86d4cd86f989dd35bc5ff499670da34255b45b0cfd830e81f605dcf7dc5542e93ae9cd76f
How to Use
- 1Type or paste the text you want to hash into the Input field.
- 2Click the Generate Hash button (or press Ctrl+Enter) to compute the SHA-512 hash.
- 3The SHA-512 hash appears in the Output field. Click Copy to copy it to your clipboard.
- 4Click Clear to empty the fields and start over.
About SHA-512
SHA-512 is the largest-output hash function in the SHA-2 family, designed by the National Security Agency (NSA) and published in 2001. The "512" indicates the output length: 512 bits, shown as 128 hexadecimal characters, regardless of input length.
How it works: unlike SHA-256 which uses 32-bit words, SHA-512 uses 64-bit words and processes data in 1024-bit blocks through 80 compression rounds. Because it is optimized for 64-bit arithmetic, SHA-512 is often faster than SHA-256 on modern 64-bit hardware while providing a much larger output space.
SHA-512 is used where the highest security and collision-resistance margin is needed: credential storage (often combined with a KDF such as PBKDF2), digital signatures, large-file integrity verification, and blockchains. As part of SHA-2, SHA-512 remains secure today with no known practical collision attacks.
FAQ
Is SHA-512 more secure than SHA-256?
SHA-512 offers a larger security margin and output size (512 vs 256 bits). For most needs both are secure; SHA-512 gives extra headroom if you want additional long-term security.
Is SHA-512 slower?
Not necessarily. SHA-512 uses 64-bit operations, so on modern 64-bit CPUs it is often as fast as or faster than SHA-256, despite its output being twice as long.
Is my data sent to a server?
No. SHA-512 is computed in your browser using the built-in Web Crypto API. Your data never leaves your device.
Can I use SHA-512 to store passwords?
SHA-512 on its own is too fast for passwords. To store passwords, use dedicated slow, salted algorithms like bcrypt, Argon2, or PBKDF2 (which can use SHA-512 internally).