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#️⃣ Hash Generator
Turn any text — or a file — into its MD5, SHA-1, SHA-256 and SHA-512 fingerprints. Everything is calculated on your own device; nothing is uploaded anywhere.
🔒 100% private — runs in your browser⚡ Live results as you type🆓 Free, no sign-up
Hash a piece of text
Type or paste anything below. All four hashes update live. The same input always produces the same hash — change one letter and the whole thing changes.
Hash a file
Drop a file to get its SHA-256 and MD5 checksums — handy for checking a download hasn't been tampered with. The file is read on your device only. Maximum sensible size: 50 MB.
📁 Drop a file here or click to choose one
What is a hash, and what is it for?
A hash is a one-way mathematical fingerprint of some data. Feed in a word, a document or a whole file, and you get a fixed-length string of hex characters. Hashes are used to:
- Verify downloads — publishers share the SHA-256 of a file; if your computed hash matches, the file is intact and untouched.
- Detect changes — even a one-character edit produces a completely different hash.
- Fingerprint data — deduplication, integrity checks and digital signatures all build on hashes.
⚠️ Honest security note: MD5 and SHA-1 are broken for security purposes — collisions can be manufactured, so they must never be used for passwords or protecting sensitive data. Use SHA-256 or SHA-512 where security matters. And a hash is not encryption: it is one-way, so a hash can never be "decrypted" back into the original — that is the whole point.