Generate MD5, SHA-1, SHA-256, SHA-384 and SHA-512 hashes of any text — right in your browser.
A hash function turns any input into a fixed-length fingerprint: MD5 gives 32 hexadecimal characters, SHA-256 gives 64, SHA-512 gives 128. The same input always produces the same digest, and changing a single character produces a completely different one — which is what makes hashes so useful for comparing files, detecting accidental corruption, deduplicating content, building cache keys and verifying that a download matches the checksum published by its author.
Under the hood, the SHA-1, SHA-256, SHA-384 and SHA-512 digests are computed by SubtleCrypto, the native WebCrypto engine built into every modern browser — the same audited code path the browser uses for HTTPS. WebCrypto deliberately does not expose MD5, so this tool ships its own compact JavaScript implementation of RFC 1321, validated against the reference test vectors (the MD5 of "abc" is 900150983cd24fb0d6963f7d28e17f72). Your text is encoded as UTF-8 before hashing, which is what virtually every server-side implementation does by default, and the output is lowercase hex. Everything runs 100% in your browser: nothing is uploaded, logged or stored.
An honest warning: MD5 and SHA-1 are cryptographically broken for collision resistance — researchers can craft two different inputs with the same digest — so they must never be used for passwords, digital signatures or anything security-sensitive. They remain fine for non-adversarial jobs such as checksums, cache keys and interoperating with legacy systems that expect them. For anything new, prefer SHA-256 or stronger; and for storing passwords, no fast hash is appropriate at all — use a dedicated slow algorithm such as bcrypt, scrypt or Argon2.
SHA-256 is the safe default for new projects: fast, universally supported and with no known practical attacks. Use SHA-512 when you want a larger digest, and MD5 or SHA-1 only when a legacy system or checksum format requires them.
No — hashing is a one-way function, and the original cannot be computed back from the digest. Short or common inputs can still be discovered by brute force or lookup tables, which is why passwords need salted, slow hashing rather than a plain digest.
Only for non-security purposes such as checksums and cache keys. Collisions can be manufactured at will, so MD5 (and SHA-1) must not be used for passwords, certificates or signatures.
Almost always an encoding difference: a trailing newline or space, a different character encoding (this tool uses UTF-8), or comparing uppercase against lowercase hex. Hash the exact same bytes and the digests will match.
No. All five algorithms run 100% locally — the SHA family via your browser's native WebCrypto API and MD5 in local JavaScript. Nothing is transmitted or stored.
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Vai.la is not responsible for how the tools are used or for decisions made based on their results.