How to use
- Type or paste your text.
- Choose the algorithm (SHA-256 is the most common).
- Click Copy to copy the hash.
How it works
The text is converted to UTF-8 bytes and hashed with the browser's Web Crypto API. The result is shown in hexadecimal. The same text always gives the same hash, and any small change gives a completely different one.
Frequently asked questions
Is there an MD5 option?
No. MD5 is broken and should not be used for anything security-related, and browsers do not include it. Use SHA-256 instead.
Can a hash be reversed?
No. A hash is one-way. That is why websites store password hashes instead of passwords (with extra protections like salting).
Why is SHA-1 still listed?
Some older systems, such as Git, still use it. Do not use SHA-1 for new security work.