// md5 · sha-1 · sha-256 · sha-512 · file integrity · no upload
Is that checksum actually SHA-256 — or just an MD5 someone relabeled?
Paste text or drop any file. You get MD5, SHA-1, SHA-256, SHA-384, and SHA-512 — all five — in under a second. Tools like md5hashgenerator.com run your file through their server. This runs in your browser. Nothing moves. Verify a vendor release, confirm a build artifact, satisfy a compliance audit — no server log, no account, no upload.
runs in-browser · no upload · no server log
// when each hash matters
MD5 and SHA-1 are broken for security. They're still useful.
MD5 is cryptographically broken — you can construct two different inputs that produce the same hash. But it's still the right tool for non-adversarial integrity checks: did this 4 GB ISO download correctly? Most distros still publish MD5 alongside SHA-256 because the use case is data corruption, not attack.
SHA-1 has been formally broken since 2017 (Google's SHAttered attack). Don't use it for anything new. Verifying legacy git commit SHAs or older signed firmware is the realistic remaining use.
SHA-256 is the modern default. Bitcoin uses it twice. TLS certificates use it. Use it when you'd otherwise reach for MD5 unless you have a specific reason not to.
SHA-384 / SHA-512 are larger members of the SHA-2 family. SHA-384 is preferred over SHA-512 in some HMAC contexts because it's not vulnerable to length-extension. SHA-512 is faster on 64-bit CPUs than SHA-256 because of word-size alignment.
// frequently asked questions
Common questions about Hash Generator
Does this tool upload my file to a server to hash it?
No. File hashing uses the WebCrypto API built into your browser — the file bytes are read locally and the hash is computed in-tab. No data is transmitted. This means you can hash sensitive documents, private keys, build artifacts, or patient data without any file leaving your machine.
How is this different from hashgenerator.co?
hashgenerator.co uploads your file to their server for hashing. Septim's hash tool uses the browser's native WebCrypto API — your file never leaves your device. For large files or sensitive data, this is a meaningful architectural difference: server-based tools create a point of exposure that client-side tools do not.
What hashing algorithms are supported?
MD5, SHA-1, SHA-256, SHA-384, and SHA-512. For security-sensitive use cases (password hashing, code signing, file integrity verification), SHA-256 or SHA-512 are recommended. MD5 and SHA-1 are provided for compatibility with legacy systems; they are cryptographically broken and should not be used for new security-critical applications.
How do I verify a file download using this tool?
Paste the expected hash published by the software vendor (usually listed as SHA-256 checksum on the download page). Then drag your downloaded file into the hash tool. If the computed hash matches the published hash exactly, the file is unmodified. This is the standard method for verifying ISO images, binary releases, and build artifacts.
Can I hash text as well as files?
Yes. Paste any text string directly into the input field to generate its hash. Useful for verifying API payloads, generating content checksums, or testing HMAC implementations.
Does the hash appear instantly?
For text inputs, yes — hashing is near-instantaneous. For large files (1GB+), the WebCrypto API processes in chunks; expect a few seconds depending on device speed. A progress indicator shows completion percentage.