SHA-256 Hash Generator

SHA-256 hash generator that computes secure digests from text or uploaded files with the Web Crypto API, including HMAC-SHA256 with a secret key. Verify hashes by comparison, free and entirely in your browser.

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<p><a href="https://devtools.patrache.studio/en/hash/sha256-hash/">SHA-256 Hash Generator</a> by
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Last updated: 2026 · Free online tool

What is SHA-256 Hash Generator?

SHA-256 hash generator that computes secure digests from text or uploaded files with the Web Crypto API, including HMAC-SHA256 with a secret key. Verify hashes by comparison, free and entirely in your browser.

How to Use

1
Select Mode— Choose between SHA-256, HMAC-SHA256, and verification mode.
2
Enter Text— Enter text or upload a file.
3
Additional Input— In HMAC mode, enter the secret key. In verification mode, enter the hash to compare.
4
View Result— Review the hash result and copy it.

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HMAC GeneratorFree online HMAC generator to create keyed message authentication codes with HMAC-SHA256 or HMAC-SHA512. Enter a message and secret key to compute a signature and verify webhooks and APIs.

Hash CompareFree online hash compare tool to verify file integrity and checksums. Paste two hash values or compute MD5, SHA-1 and SHA-256 of a file and instantly see whether they match.

Bcrypt Hash GeneratorFree online Bcrypt tool that generates salted password hashes with adjustable cost rounds and verifies a plaintext password against an existing hash.

Frequently Asked Questions

It is used in file integrity verification, digital signatures, blockchain, API signing, and various other security-critical applications.

A message authentication code using a secret key. It is used for API webhook signature verification and more.

Yes. The built-in Web Crypto API generates hashes with native performance.

SHA-256 produces a 256-bit (64 hex character) hash and has higher collision resistance than MD5, making it suitable for security purposes.

No. All computation is processed in the browser via Web Crypto API.

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