SHA-256 Hash Generator
Last updated: 2026 · Free online tool
What is SHA-256 Hash Generator?
Free online tool to generate SHA-256 hashes from text or files. Supports HMAC-SHA256 and hash verification
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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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.