SHA-512 Hash Calculator

Calculate the SHA-512 hash of any text. Enter or paste text below and select Calculate SHA-512 hash to generate a 512-bit (64-byte) digest displayed as 128 hexadecimal characters. The hash is automatically copied to your clipboard.

What is SHA-512?

SHA-512 (Secure Hash Algorithm 512-bit) is a cryptographic hash function in the SHA-2 family. It converts input data of any size into a fixed-length 512-bit (64-byte) hash, commonly represented by 128 hexadecimal characters.

A cryptographic hash acts like a digital fingerprint. The same input bytes always produce the same hash, while even a small change to the input generally produces a very different result.

SHA-512 is used for data integrity verification, digital signatures, certificates, and cryptographic protocols. It is a one-way function: the original input cannot feasibly be recovered from the hash alone.

How long is a SHA-512 hash?

A SHA-512 digest is always 512 bits (64 bytes), or 128 hexadecimal characters, regardless of the input length. Internally, SHA-512 processes input in 1024-bit blocks and uses 64-bit words over 80 rounds.

SHA-512 vs. SHA-256

Both SHA-512 and SHA-256 belong to the SHA-2 family and remain secure for general-purpose cryptographic hashing.

Feature SHA-512 SHA-256
Hash length 512 bits / 128 hex characters 256 bits / 64 hex characters
Collision resistance Approximately 256 bits Approximately 128 bits
Internal word size 64 bits 32 bits
Performance Often faster on 64-bit processors Often efficient on 32-bit processors

SHA-512 is not automatically the better choice for every application. SHA-256 produces shorter digests and is widely supported. SHA-512 offers a longer digest and higher theoretical collision resistance.

Is SHA-512 secure?

Yes. SHA-512 is considered secure for general-purpose cryptographic hashing. No practical collision or preimage attacks against the full SHA-512 algorithm are known.

For integrity checks, compare the calculated digest against a checksum obtained from a trusted source. Matching hashes alone do not establish that an untrusted source is authentic.

SHA-512 is not suitable for password storage on its own because it is designed to run quickly. Use a dedicated password-hashing algorithm such as Argon2id, bcrypt, or scrypt instead.

This calculator uses the browser's Web Crypto API to hash text locally using UTF-8 encoding. Your input text is not sent to Xorbin's server for hashing.

How to use this calculator

  1. Enter or paste the text you want to hash.
  2. Select Calculate SHA-512 hash.
  3. The 128-character hexadecimal digest is generated and automatically copied. Press Ctrl+V (or ⌘+V on Mac) to paste it.
  4. Optionally select Uppercase output to change the digest's letter case and copy the updated result.

Frequently asked questions

Can SHA-512 be reversed?

No. SHA-512 is a one-way hash function. The original input cannot feasibly be calculated from the digest alone, although common or predictable inputs may be discovered by guessing and comparing hashes.

How many characters are in a SHA-512 hash?

SHA-512 always produces 512 bits (64 bytes), usually displayed as 128 hexadecimal characters.

Can two different inputs have the same SHA-512 hash?

Yes, collisions must exist mathematically because the output has a fixed length. However, no practical collision attack against the full SHA-512 algorithm is known.

Should I use SHA-512 to store passwords?

No. Plain SHA-512 is too fast for secure password storage. Use a purpose-built password-hashing function such as Argon2id, bcrypt, or scrypt.

Why do two SHA-512 calculators give different results?

SHA-512 produces identical digests for identical input bytes. Check for differences in spaces, line breaks, capitalization, and text encoding. This calculator uses UTF-8.

Last updated:

© 2008–2026 XORBIN.COM. All rights reserved.