What is HMAC Generator?

Computes HMAC-SHA256 or HMAC-SHA512 signatures and shows them in hex and Base64.

How do I use HMAC Generator?

Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.

Is HMAC Generator free?

Yes, HMAC Generator is completely free. No signup, no downloads and no usage limits.

HMAC Generator

Developer

Generate HMAC-SHA256 or HMAC-SHA512 signatures online free using the Web Crypto API. Get both hex and Base64 forms instantly; everything runs in your browser.

MessageSecret keyHash function

Using the Web Crypto API — the key and message never leave your browser.

Frequently Asked Questions

What is HMAC Generator?
Computes HMAC-SHA256 or HMAC-SHA512 signatures and shows them in hex and Base64.
How do I use HMAC Generator?
Type or paste your data into the field on this page and press the button. The result is calculated instantly in your browser — nothing is uploaded.
Is HMAC Generator free?
Yes, HMAC Generator is completely free. No signup, no downloads and no usage limits.

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