Hashes hash-wasm hash

SHA256 Hash Generator

Generate SHA256 checksums for text and files.

sha256.workspace
0 options
0 bytes UTF-8, Hex, Base64, or File input

Secure client-side computation. No data leaves your browser. Privacy Security

Result Output

What Is SHA-256?

SHA256 is a SHA-2 algorithm with 256-bit output and broad ecosystem support, making it the practical default for modern integrity verification workflows.

Specifications

Output Size 256 bits
Standard FIPS 180-4
Standard Year 2015
Origin SHA-256 in the SHA-2 family
Origin Year 2001

Use Cases

  • Software download verification
  • Message integrity checks
  • Blockchain and security tooling
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Security Notice

SHA256 is secure for integrity, but use Argon2/bcrypt/scrypt for password storage.

Related Tools

SHA-512 Hashes SHA3-256 Hashes BLAKE3 Hashes SHA-512/256 Hashes

Utilities

File Hash Verifier Verify local files against published checksums. Hash Compare Compare expected and actual digest values. Multi Hash Generator Generate common hashes from one input.

Guides

Algorithm Comparison Guide Choose the right primitive for each task. Hash Test Vectors Compare known outputs across common algorithms.

Implementation Notes

Practical usage details for this browser-based SHA-256 tool.

How to Generate a SHA-256 hash

  1. Choose UTF-8, Hex, Base64, or File input mode.
  2. Enter text, encoded bytes, or choose a local file to process.
  3. Click Generate SHA-256 Hash and copy the result.

Example Input and Output

Sample input:

abc

Sample output:

ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad

When Not to Use SHA-256

  • Do not use a plain hash or derivation output directly as password storage without the right password-hashing construction and parameters.

Recommended Alternatives

Review related tools when you need a different output size, security margin, or keyed construction.

SHA-256 Test Vectors

Input: empty string

e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855

Input: abc

ba7816bf8f01cfea414140de5dae2223b00361a396177a9cb410ff61f20015ad

Command Line Alternatives

sha256sum file.zip
shasum -a 256 file.zip
certutil -hashfile file.zip SHA256
openssl dgst -sha256 file.zip

File Verification Scenario

Use SHA-256 to verify downloaded installers, archives, container images, and release artifacts when the publisher provides a trusted checksum.

Security Guidance

SHA-256 is a strong default for file integrity and general hashing, but it is not a password hashing algorithm. Use Argon2id, bcrypt, or scrypt for password storage.

Contextual Links

Verify a SHA-256 file checksumGenerate SHA-256 command examplesCompare with SHA-512 Privacy Security

Frequently Asked Questions