Generate SHA-1, SHA-256, SHA-384, and SHA-512 hashes from any text.
Hash Generator turns any text into a fixed-length fingerprint using the SHA-1, SHA-256, SHA-384, and SHA-512 algorithms. A hash is a one-way summary. The same input always produces the same string, but you cannot reverse the string back into the original text, which makes hashes useful for checking that data has not changed and for comparing values without exposing them. The problem it solves is verification, proving two things match without revealing or storing the raw content.
You paste or type your text, pick the algorithm you need, and the hash appears ready to copy. If you want to compare against a known checksum, you generate the hash of your text and check whether the two strings are identical, character for character. Different algorithms give different-length outputs, so you match the one the other side used.
Choosing the algorithm matters. SHA-256, SHA-384, and SHA-512 are part of the modern SHA-2 family and are the safe default for new work, with the longer variants producing longer hashes. SHA-1 is older and is now considered weak for security purposes, so it is best kept for compatibility with legacy systems that still expect it rather than for anything protecting real data. Any tiny change to the input, even a single space, flips the hash completely, which is precisely what makes it good at spotting tampering.
Against writing a quick script to hash something, this is faster for a one-off value and needs no setup. When you need to hash a whole file, salt and stretch a password for storage, or hash at high volume in an application, dedicated libraries and command-line tools are the right choice, since this tool is aimed at hashing text you can paste in.
Developers use it to verify a checksum against a download, to compare values without moving the originals, to generate test fixtures, and to double-check that two pieces of text are truly identical. It is also handy for learning how hashing behaves as you tweak the input.
The hashing runs entirely in your browser, so your text is never uploaded and nothing is stored. There is no sign-up and no cost. Your device sets the only limit, and because hashing short text is quick, results appear as fast as you can paste and pick an algorithm.
No. Hashing is one-way by design, so there is no button that reverses a hash into the text that made it. That irreversibility is what makes hashes useful for verification.
For new work, SHA-256 or one of the longer SHA-2 options is the safe default. Pick SHA-1 only when an older system specifically requires it, since it is no longer considered strong for security.
Hashes are built so that even a one-character change scrambles the entire output. This is intentional, because it lets a hash reveal that something was altered, however small the change.
SHA-1 is now regarded as weak and should not be relied on to protect data against tampering. It remains available here for compatibility with legacy tools that still expect it.
This tool is built for text you paste in rather than files. To checksum a downloaded file, a command-line tool or a dedicated file-hashing utility is the better fit.
Yes, a given input and algorithm always produce the identical hash, which is what lets you compare two values for a match. If two hashes differ, the inputs were not the same.
No. The calculation happens in your browser and nothing you enter is uploaded, so sensitive text stays on your device.
Polished Pixels. All tools. About. Contact. Every tool runs in your browser and your files are never uploaded.