How to use: HMAC Generator
HMAC Generator is a free online Hash Tools tool that create keyed HMAC signatures with SHA-256/384/512 instantly in your browser. Paste your data, adjust the options and get the result in real time — no installation, no sign-up, and nothing is ever uploaded to a server.
How to use
Using HMAC Generator takes three steps:
- Paste your data into the input box (or load the example).
- Configure the options to match your target format or scenario.
- Copy, download or inspect the output — it updates live as you type.
Description
Create keyed HMAC signatures with SHA-256/384/512.
Because everything is computed client-side, HMAC Generator is safe to use with sensitive data such as API keys, tokens or private logs.
Run
These ready-made examples show typical inputs and the exact output HMAC Generator produces for them.
Examples
HMAC-SHA256 with a secret key.
payload-to-sign
Use cases
Common situations where HMAC Generator helps:
- Create keyed HMAC signatures with SHA-256/384/512.
- Because everything is computed client-side, HMAC Generator is safe to use with sensitive data such as API keys, tokens or private logs.
FAQ
What is HMAC Generator?
HMAC Generator create keyed HMAC signatures with SHA-256/384/512. It runs entirely in your browser, so your data stays private.
Is HMAC Generator free to use?
Yes. HMAC Generator is free, unlimited and works without registration or installation.
Does my data get uploaded?
No. All processing happens locally in your browser; nothing is sent to any server.