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About HMAC Hash Calculator
Free online HMAC hash calculation tool, supports HMAC for multiple hash algorithms including MD5, SHA1, SHA256, SHA512, and provides output formats such as hexadecimal, Base64, and binary. Suitable for API signature verification, message authentication, data integrity verification and other scenarios.
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User Guide
Key Features
- Free online HMAC hash calculator. Compute HMAC with multiple algorithms — MD5, SHA1, SHA256, SHA512 and more — and get output in hexadecimal, Base64, or binary
- Ideal for API signature verification, message authentication, and data integrity checks
How to Use
- Open the tool page — no installation needed
- Enter the message and secret key, choose an output format (hex, Base64, or binary) as needed, and generate a random key with one click if you like
- Results are calculated in real time; click "Copy" next to any algorithm to grab its HMAC value
Important Notes
- This tool is completely free and requires no sign-up
- Everything runs locally in your browser — your data never leaves your device
Frequently Asked Questions
What is HMAC Hash Calculator?
Free online HMAC hash calculation tool, supports HMAC for multiple hash algorithms including MD5, SHA1, SHA256, SHA512, and provides output formats such as hexadecimal, Base64, and binary. Suitable for API signature verification, message authentication, data integrity verification and other scenarios.
How do I use HMAC Hash Calculator?
Open the tool page — no installation needed Enter the message and secret key, choose an output format (hex, Base64, or binary) as needed, and generate a random key with one click if you like Results are calculated in real time; click "Copy" next to any algorithm to grab its HMAC value
What should I know before using HMAC Hash Calculator?
This tool is completely free and requires no sign-up Everything runs locally in your browser — your data never leaves your device
Is HMAC Hash Calculator free to use?
Yes, HMAC Hash Calculator is completely free. No download or installation required — it runs right in your browser.