// Developer Tool

HMAC GENERATOR

Compute an HMAC (Hash-based Message Authentication Code) of any message with a secret key. Pick your hash, get the digest as hex or base64. Everything runs locally in your browser — nothing is ever sent to a server.

Message & Key

Computed live as you type, entirely on your device using the Web Crypto API. Your message and key never leave this page.

HMAC Digest
Enter a message and key to compute the HMAC.
Algorithm
HMAC-SHA256
Output Bits
256
Length
0