SHA-256 Hash Generator

How to use the sha-256 hash generator

1. Paste the text you want to hash.
2. Choose the algorithm.
3. Copy the hexadecimal digest.

About this tool

A cryptographic hash reduces any input to a fixed-length fingerprint. The same input always produces the same digest, a one-character change produces a completely different one, and the digest cannot be reversed to recover the input. That makes hashes useful for verifying that data has not changed in transit or storage.

Hashing happens through the browser's Web Crypto API — the same implementation your applications use — so the digests match what your server or CLI produces for the same bytes. SHA-1 is included because older systems still use it, but it is broken for collision resistance and should not be used for new signatures or integrity guarantees.

Common uses

• Verifying a checksum published alongside a download.
• Comparing two strings without storing either.
• Generating a stable cache key from a long input.

Frequently asked questions

Can a hash be reversed?

Not directly. But short or common inputs can be found by brute force or lookup tables, so hashing alone does not make a password or an email address anonymous.

Should I use this to store passwords?

No. Passwords need a slow, salted algorithm such as bcrypt, scrypt or Argon2. A plain SHA-256 is far too fast to resist guessing.

Why is MD5 not offered?

The Web Crypto API deliberately omits it. MD5 is cryptographically broken and adding a third-party implementation to offer it would be a step backwards.