SHA-256 Hash

Generate SHA-256 cryptographic hash for text or files

About the SHA-256 Hash Generator

This SHA-256 hash generator produces a 64-character hexadecimal digest from either pasted text or a selected file. SHA-256 is the current default for integrity checking, used by TLS certificates, git object identifiers and the checksums published alongside software downloads.

A SHA-256 hash generator produces a 256-bit digest, written as 64 hexadecimal characters. It is the algorithm that replaced MD5 and SHA-1 for security work, and the one you will see published alongside software downloads.

The property that matters is sensitivity: change a single bit of input and roughly half the output bits change. That is what makes a hash comparison a reliable integrity check — a truncated download or a tampered file produces a visibly different digest, not a similar one.

Hashing a file here happens in your browser, so a large download does not have to be uploaded to be verified. Note that SHA-256 is not for password storage; that needs a deliberately slow algorithm such as bcrypt or Argon2.

How to use the SHA-256 Hash Generator

  1. Choose text or file. Paste text, or select a file to hash.
  2. Generate the digest. The 64-character SHA-256 hash is produced immediately.
  3. Compare with the expected value. Paste the published checksum and check the two match.
  4. Copy the hash. Take the digest for your records or comparison.

SHA-256 Hash Generator features

  • 64-character hexadecimal SHA-256 output
  • Hash pasted text or a selected file
  • File hashing without uploading
  • Suitable for verifying software downloads
  • One-click copy of the digest
  • Runs entirely in your browser

Frequently asked questions

How long is a SHA-256 hash?

256 bits, written as 64 hexadecimal characters. The length is fixed no matter how large the input is.

Can I hash a file without uploading it?

Yes. File hashing happens in your browser, so even a large download never leaves your machine.

Is SHA-256 still considered secure?

Yes. It is the current general-purpose standard, used in TLS certificates, git object IDs and software release checksums.

Can I use SHA-256 to store passwords?

No. It is designed to be fast, which is wrong for passwords. Use bcrypt, scrypt or Argon2 instead.

Why does my hash not match the published one?

Usually the download is incomplete or the wrong file was hashed. Any difference in input produces a completely different digest.