SHA-512 Hash Generator
Free SHA-512 hash generator: get the 128-character SHA512 digest of any text or file, copy it and verify it against a published checksum in your browser.
How to use SHA-512 Hash Generator
- 1Enter text, or use “Hash a file” to hash a file’s bytes.
- 2Copy the 128-character SHA-512 from the first row.
- 3Paste an expected SHA-512 into “Compare with” to check it.
What makes it better
- SHA-512 displayed first in a large, easy-to-copy digest
- File hashing in chunks with progress and a cancel button
- HMAC-SHA-512 using your own secret key
- Hex, Base64 or URL-safe Base64 output, plus uppercase hex
- SHA-384, SHA-256 and SHA-3 are available under “More algorithms”
About SHA-512 Hash Generator
SHA-512 Hash Generator computes the 512-bit SHA-512 digest of your text or file and shows it as 128 hexadecimal characters. It updates as you type, and files are read in chunks on your device. SHA-512 offers a larger safety margin than SHA-256 and is a common choice for HMAC keys, signatures and long-lived integrity checks.
Common uses
- Verify a Linux ISO or archive whose checksum file lists SHA-512 sums.
- Create an HMAC-SHA-512 to test an API that signs requests with it.
- Produce a long digest to use as a key-derivation input or content identifier.
- Compare SHA-512 with SHA-256 for the same input to see the longer output.
Example
Input
abc
Result
ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f
Good to know
- SHA-512 uses 64-bit arithmetic, so on 64-bit processors it is often faster than SHA-256 for large inputs. In this browser tool the speed is governed by JavaScript, so very large files simply take a little longer.
- SHA-512/256 and SHA-512/224 are separate algorithms that start from different constants and truncate the output. Cutting this 128-character result short does not give you those digests.
- Like every fast hash, SHA-512 alone is not a password storage scheme. Use Argon2, scrypt or bcrypt with a salt.
SHA-512 Hash Generator FAQ
How long is a SHA-512 hash?
A SHA-512 digest is 512 bits, which is 128 hexadecimal characters or 88 characters in Base64 with padding. It stays that length for an empty input and for a multi-gigabyte file alike.
Is SHA-512 more secure than SHA-256?
It has a longer output and larger internal state, so its theoretical margin is bigger, but neither has a known practical attack. Pick it when a spec requires it or you want a wider margin, not because SHA-256 is weak.
Why is SHA-512 sometimes faster than SHA-256?
It processes 128-byte blocks using 64-bit operations, so on a 64-bit CPU it handles more data per step. On phones and 32-bit hardware the advantage disappears and SHA-256 can be quicker.
Is SHA-512/256 the same as taking the first half of SHA-512?
No. SHA-512/256 uses its own initial values, so its 64 hex characters differ from the first 64 characters of SHA-512. This page computes plain SHA-512 only.
How do I verify a file against its SHA-512 checksum?
Choose the file with “Hash a file”, let the progress bar finish, then paste the 128-character value from the publisher into “Compare with”. A green notice means the file is identical to the one that was hashed.