HMAC Generator

Generate HMAC (Hash-based Message Authentication Code) signatures using SHA-256, SHA-384, or SHA-512. This tool uses the Web Crypto API for secure, client-side computation. Output is available in both hexadecimal and Base64 formats for easy integration with APIs and authentication systems.

Message

Secret Key

Algorithm

HMAC (Hex)

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HMAC (Base64)

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How to Use This Tool

Enter the message you want to sign in the message input area.
Enter your secret key in the key input field.
Select the HMAC algorithm (SHA-256, SHA-384, or SHA-512).
The HMAC is computed automatically and displayed in both hex and Base64 formats.

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