HMAC Generator
Generate HMAC signatures with SHA-256, SHA-384, SHA-512 or SHA-1 and a secret key — hex or Base64. Runs locally. Free.
✓ 100% free ✓ No sign up ✓ Runs in your browser — nothing uploaded
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Result
How to use HMAC Generator
- 1Paste or type your text in the left box (or open a file).
- 2The converted result appears instantly on the right.
- 3Copy it with one click or download it as a file.
Questions
Is HMAC Generator free?
Yes. HMAC Generator is 100% free with no limits, no watermark, no sign up and no email required.
Is my data sent anywhere?
No. Everything is calculated locally in your browser. Nothing you type is sent to or stored on any server.
Does HMAC Generator work on my phone?
Yes. HMAC Generator works in any modern browser on iPhone, Android, Windows, Mac, Linux and Chromebook. No app or install needed.
Do I need to create an account?
Never. There is no sign up, no login, no email and no paywall. Just open the page and use it.