SHA3-512 Hash Generator

Generate SHA3-512 hashes using the Keccak sponge construction. Maximum output length with the latest NIST hash standard.

Enter text and click Generate to create a SHA3-512 hash

Other Hash Algorithms

What is SHA3-512?

SHA3-512 is the 512-bit variant of SHA-3, the latest NIST hash standard based on the Keccak sponge construction. It produces a 512-bit hash, providing the highest security margin in the SHA-3 family with 256 bits of collision resistance.

How SHA3-512 Works

Like SHA3-256, SHA3-512 uses the Keccak sponge with a 1600-bit state. The difference is a smaller rate (576 bits vs 1088 bits for SHA3-256), meaning more permutation rounds per input block but a larger security capacity (1024 bits).

Output

128 hex characters (512 bits)

Year

2015

Status

✓ Secure

Common Use Cases

  • Maximum-security hashing requirements
  • Post-quantum cryptographic applications
  • Long-term data integrity verification
  • High-security digital signatures
  • Key derivation for sensitive systems

Security Considerations

SHA3-512 provides 256 bits of collision resistance and 512 bits of preimage resistance — the maximum offered by any standard hash function. Its sponge construction provides additional security properties beyond collision resistance.

SHA3-512 vs Other Algorithms

SHA3-512 is the most conservative choice in the SHA-3 family, offering the highest security at the cost of being slower than SHA3-256. In software, SHA-512 (SHA-2) is faster, but SHA3-512 offers structural diversity. Use SHA3-512 when you need the absolute maximum security margin.

Frequently Asked Questions

What is SHA3-512?
SHA3-512 is the 512-bit variant of the SHA-3 hash standard. Based on the Keccak sponge construction, it provides the highest security margin in the SHA-3 family with 256 bits of collision resistance.
When should I use SHA3-512?
Use SHA3-512 when you need maximum security margin, post-quantum considerations, or when regulations require it. For most applications, SHA-256 or SHA3-256 are sufficient and faster.
Is SHA3-512 slower than SHA-512?
Yes, in software implementations SHA3-512 is typically 2-3x slower than SHA-512 (SHA-2). However, in hardware (ASIC/FPGA), SHA-3 can be very efficient due to its simple permutation structure.
How long is a SHA3-512 hash?
A SHA3-512 hash is 512 bits (64 bytes), displayed as a 128-character hexadecimal string — the same length as SHA-512 from the SHA-2 family.
What is the difference between SHA3-256 and SHA3-512?
SHA3-512 uses a smaller rate (absorbs less data per permutation) giving it more internal capacity for security. It provides 256 bits of collision resistance vs 128 bits for SHA3-256, at the cost of being slower.