Hash Generator

What is a hash function?

A cryptographic hash function takes input of any size and produces a fixed-length string (the digest). The same input always yields the same hash, and even a tiny change to the input produces a completely different output. Hashes are one-way — you cannot reverse a digest back to the original text.

The SHA family

• SHA-1 — 160-bit. Considered weak for security; avoid for new cryptographic use, but still seen in legacy systems and checksums.
• SHA-256 — 256-bit. The most widely used secure hash today.
• SHA-384 / SHA-512 — longer digests from the SHA-2 family, used where extra strength is desired.

Common uses

• Verifying file integrity (checksums).
• Storing password hashes (with a proper salt and a slow algorithm like bcrypt/Argon2 — SHA alone is not enough for passwords).
• Generating content fingerprints and cache keys.
• Digital signatures and certificates.

Note on MD5

MD5 is intentionally not offered here — it is cryptographically broken. This tool uses the browser's Web Crypto API, which provides the secure SHA family.

Is my data safe?

Yes — hashing happens entirely in your browser. Nothing is sent to a server.

Frequently asked questions

Which algorithms are supported?

SHA-1, SHA-256, SHA-384, and SHA-512 — all computed in your browser via the Web Crypto API.

Can I reverse a hash back to the original text?

No. Cryptographic hashes are one-way functions; you cannot recover the input from its hash.

Is my input sent anywhere?

No. Hashing runs locally in your browser, so your input never leaves your device.