SHA-512 Hash Generator

Generate SHA-512 checksums for text or a local file in your browser. Get lowercase hex and Base64 output, see the input byte size and output length, copy the result and download a summary. Files up to 200 MB.

Developer Runs client-side Free to use

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About the SHA-512 Hash Generator

SHA-512 Hash Generator calculates the SHA-512 digest of text or a file using your browser’s Web Crypto API. Text is encoded as UTF-8 before hashing, and files up to 200 MB are read locally. The 512-bit result is shown as 128 lowercase hexadecimal characters and as Base64, together with the exact input size in bytes.

SHA-512 is a good choice for integrity checks: if a file you downloaded produces the same checksum the publisher lists, it has not been changed or corrupted. It is not suitable for storing passwords on its own, because it is fast to compute — password storage needs a slow, salted method such as Argon2, scrypt, bcrypt or PBKDF2. A matching checksum shows a file is identical, not that it is safe.

How to use

Choose Text or File.
Type or paste text, or choose one file up to 200 MB.
Click Generate SHA-512.
Compare the hex or Base64 value with the expected checksum.
Copy the result or download the summary.

Key features

SHA-512 via the browser’s Web Crypto API.
Text (UTF-8) or one local file up to 200 MB.
Lowercase hex and Base64 output.
Input byte size and output length.
Copy buttons and summary download.
Reset clears text, file and results.

Best practices

Get the expected checksum from the official source over HTTPS.
Compare the whole hash, not just the first few characters.
Remember that changing even one byte changes the whole hash.
Use a password-hashing algorithm, not plain SHA-512, for stored passwords.
Watch for line-ending differences when hashing text copied between systems.

Benefits

Verify downloads and backups quickly.
No software to install.
Files never leave your device.
Clear, copy-ready output.

Frequently asked questions

What is SHA-512 used for?

Mainly for integrity: confirming that a file or message is exactly the same as the original by comparing checksums. It is also used inside digital signatures and other protocols.

Can I use SHA-512 to store passwords?

Not by itself. It is designed to be fast, which makes guessing passwords fast too. Use Argon2, scrypt, bcrypt or PBKDF2 with a salt for passwords.

Why is my text hash different from another tool?

Hashes are calculated on bytes. Differences in character encoding, trailing spaces or line endings (\n vs \r\n) produce different hashes. This tool uses UTF-8.

What is the SHA-512 of an empty string?

cf83e1357eefb8bdf1542850d66d8007d620e4050b5715dc83f4a921d36ce9ce47d0d13c5d85f2b0ff8318d2877eec2f63b931bd47417a81a538327af927da3e.

Is there a file size limit?

Yes, 200 MB. Larger files are refused before reading, because the browser has to load the whole file into memory to hash it.

Does a matching hash mean a file is safe?

No. It only shows the file is identical to the one the checksum was made from. If that original was harmful, the copy is too.