Text Hash and HMAC Calculator
Hash text or calculate an HMAC with a key you enter locally. A hash is not reversible encryption.
Every character counts, including spaces and line breaks. The text stays in this page.
HMAC needs the same key on both sides, such as a webhook signing secret.
Your result
Type some text to see its fingerprint.
How to use it
- Type the text.
- Choose hash or HMAC, and SHA-256, SHA-384, or SHA-512.
- Type the key when you choose HMAC, then copy the hex.
Examples
- SHA-256Hash the text Hi 3639efcd08abb273b1619e82e78c29a7df02c1051b1820e99fc395dcaa3326b8
- HMACHMAC of Hi with the key key, SHA-256 79072ecd38d20cb6a30171e8c509f2a897bd0f8d0982fb48d487ae6ec4f103cf
- SHA-384Hash the text Hi with SHA-384 efcbca4c3e81ba9f55cfc49bc8bf20d4b0e2545601d20fbf604cba6a00949f1b0d876238db510aade8099b91b1c7e90d
Tool details and privacy
Hash text, or calculate an HMAC with a key you type. A hash is not reversible encryption. The key stays in the browser.
HMAC needs the key. A plain hash ignores the key.
Options
- The digests are SHA-256, SHA-384, and SHA-512.
- The key is used only for HMAC.
Limits
- A hash cannot be reversed into the original text. This is not encryption.
- The key is not stored.
- MD5 is not offered.
Privacy
What you type stays in your browser. Nothing is uploaded or saved on the server.
Questions
Can the hash be reversed into the text?
No.
Is the key stored?
No.
Is MD5 offered?
No.
Is anything uploaded or saved on the server?
No. It stays in the browser.