Generate HMAC (Hash-based Message Authentication Code) using SHA-256, SHA-512, or MD5 at SmallSeaTools.com. A must-have tool for API security and authentication

🔐 HMAC Generator

Select Hash Algorithm: SHA-256 SHA-512 MD5 Enter Secret Key: Enter Message: Select Output Format: Hexadecimal Base64

Generated HMAC:

Disclaimer: This tool is for educational and informational purposes only. Use generated HMACs responsibly. SmallSeaTools is not responsible for any misuse or damage caused by this tool.

How to Use:

1. Select the desired hash algorithm (SHA-256, SHA-512, or MD5).
2. Enter the secret key and message.
3. Select the output format (hexadecimal or Base64).
4. Click "Generate HMAC" to compute the HMAC.