Hash Generator
Free hash generator. Create MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text instantly in your browser, with one-click copy. Nothing is uploaded.
🔒 All hashing happens in your browser — your text is never uploaded.
Free Hash Generator (MD5, SHA-1, SHA-256, SHA-512)
This free online SHA256 generator and hash tool instantly turns any text into its MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes — all at once, in lowercase hex, updating live as you type. Copy any single hash with one click, or grab them all together. It’s free, instant and runs entirely in your browser, so the text you hash never leaves your device.
How to use the hash generator
- Type or paste your text into the box on the left (or click Load sample).
- The five hashes appear instantly on the right and refresh as you edit the text.
- Click Copy next to any hash to copy just that value (lowercase hex).
- Or click Copy all hashes to copy every algorithm at once.
- Use Clear to reset and start again.
What is a hash function?
A hash function is a one-way mathematical process that takes any input — a word, a paragraph or a whole file — and produces a fixed-length string of characters called a hash or digest. The same input always gives the same hash, but you cannot reverse a hash back into the original text. Even a tiny change to the input produces a completely different output, which is exactly why hashes are so useful.
The most common everyday use is checksums and integrity verification: software downloads, backups and Git commits publish a hash so you can confirm a file arrived without being altered or corrupted. Hashes also power password storage, digital signatures and de-duplication. Note that MD5 and SHA-1 are no longer collision-safe — researchers can craft two different inputs with the same hash, so they should not be used for security or signatures. For anything that needs to resist tampering, prefer SHA-256 or stronger (SHA-384 / SHA-512). MD5 and SHA-1 remain fine for non-security checksums.