MultiConvers

Hash Generator

Turn text into a SHA-2 hash using the Web Crypto API. The digest is shown as lowercase hexadecimal.

How to use

  1. Paste or type the text you want to hash.
  2. Choose SHA-256, SHA-384 or SHA-512.
  3. Copy the lowercase hex digest. The same input always produces the same hash.

How it works

A cryptographic hash maps arbitrary input to a fixed-length digest. The same text always produces the same hash; a small change produces a different one. This page supports SHA-256, SHA-384 and SHA-512 through crypto.subtle.digest.

Hashing is not encryption: you cannot get the original text back from the digest, but that also means a hash is not a way to hide a message you later need to read.

These algorithms are not a recommended way to store account passwords — use a password-hashing function such as Argon2 or bcrypt for that. A fast SHA-256 of a password is still easy to attack at scale. MD5 is not offered here.

Formula

digest = SHA-256 | SHA-384 | SHA-512 of UTF-8 bytes
output = lowercase hexadecimal

Worked examples

  • Empty SHA-256

    (empty string) → e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

  • SHA-256 of abc

    abc → ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad

  • SHA-512 of abc

    abc → ddaf35a193617abacc417349ae20413112e6fa4e89a97ea20a9eeee64b55d39a2192992a274fc1a836ba3c23a3feebbd454d4423643ce80e2a9ac94fa54ca49f

Useful notes

  • Hashing is not encryption.
  • Never store account passwords as raw SHA-256, SHA-384 or SHA-512. Use a dedicated password-hashing function.
  • The text is not uploaded.

FAQ

Is hashing the same as encryption?

No. Encryption is designed to be reversed with a key. A hash is a one-way digest. Do not treat a SHA-256 string as a hidden message.

Can I use this to store passwords?

No. Fast SHA-2 hashes are a poor password store. Use a dedicated password-hashing function such as Argon2 or bcrypt, with a unique salt, on the server.

Which algorithms are available?

SHA-256, SHA-384 and SHA-512. MD5 and SHA-1 are not offered.

Do you support MD5?

No. MD5 is a legacy, insecure digest and is not offered here.

Is my text uploaded?

No. Hashing runs in your browser and the input is not sent to analytics.

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