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Hash Generator (SHA-256 / SHA-1 / SHA-512)
Create a hash from text. It's computed using your browser's crypto features, so your data is never sent anywhere. Use it with peace of mind.
As you type, the hash is calculated instantly.
What is a hash?
A hash function turns input data into a fixed-length string (the hash). The same input always produces the same hash, and even a tiny difference yields a completely different value. Hashes are used for tamper detection, verifying that data is identical, and storing passwords.
Supported algorithms
- SHA-256 / SHA-384 / SHA-512: currently recommended, secure hashes. SHA-256 in particular is widely used.
- SHA-1: provided for compatibility. Collisions have been found, so it's not recommended for security use.
Computation uses the browser's built-in Web Crypto API, so it's fast, and your input is never sent anywhere.
Note: MD5 isn't included in browsers, so it's not supported.
FAQ
Which hashes are supported?
SHA-256, SHA-1, SHA-384, and SHA-512 are supported. You can compute several at once.
Can I use MD5?
MD5 isn't included in browsers, so it's not supported.
Is my input sent anywhere?
No. It's computed using the browser's built-in Web Crypto and is never sent.
Can I display in uppercase?
Tick “Uppercase” to show the hex in uppercase.