Hash Generator
Enter some text to generate hashes
Frequently Asked Questions
Everything you need to know about cryptographic hashes
What is a cryptographic hash?
A cryptographic hash is a mathematical function that transforms data of any length into a fixed-length string. It is a one-way function: the same input always produces the same output, but it is practically impossible to derive the input from the output.
What is the difference between SHA-1, SHA-256 and SHA-512?
SHA-1 produces a 160-bit hash (40 hex characters) and is considered insecure for cryptographic uses. SHA-256 produces 256 bits (64 characters) and is widely used. SHA-512 produces 512 bits (128 characters) and is the most secure of the three, used where greater strength is required.
What are hashes used for in practice?
Hashes are used to verify file integrity (check that they have not been altered), securely store passwords in databases, digital signatures, and to uniquely identify content such as files or commits in version control systems like Git.
Does my data stay private?
Yes, and not because we promise it: this tool runs entirely inside your browser. What you type or upload never leaves your device, so it never reaches a server of ours and there is nothing we could keep, read or lose. You can check it yourself: open the page, disconnect from the internet, and the tool keeps working.
Do you store what I enter?
No. There is no database behind this tool: we do not store your files, your text or your results. When you close the tab nothing is left — not here with us, because it never arrived, and not anywhere else.
Do you profile me? Are you GDPR compliant?
We do not profile you: there is no account to create, we never ask for your email to use a tool, and we keep no profile of what you do. We are an Italian company and we work under the GDPR and the other European rules, with the privacy notice and the consent request in plain sight. One thing we say in full rather than hiding it behind a slogan: the ads on the page are Google's, and Google may use cookies to personalise them. You decide from the consent banner: if you say no the ads stay, but they are not personalised, and the tool works exactly the same.
If it is free, how do you make money?
From the ads on the page, and that is all. We do not sell your data, there is no hidden paid plan, there is no limit that eventually asks for your card, and you do not have to sign up. The ads pay for the servers and for the time we spend writing the tools: that is how we can keep them open to everyone.