Message
Secret Key
Generated HMACs
HMAC generator helps you generate Hash-based Message Authentication Codes using a secret key and hash algorithm. This free online tool is ideal for developers who need to create HMAC signatures for API authentication and request validation. Enter your message and secret key, and the generator will produce the HMAC hash instantly.
The industry standard for secure API authentication (e.g., JWT signatures, AWS, Stripe).
Provides stronger security for highly sensitive applications.
HMAC-SHA256:
d93591bdf7a9d2d6a362547a0701c6010d293125211915995537905132z8787fQuickly verify if your own HMAC implementation is producing correct results.
Your secret keys never leave your browser, ensuring maximum security.
Need to generate a simple hash? Use our SHA Generator.
Working with JWTs? Check out our JWT Decoder.