Free online hash generator. Select MD5, SHA-1, SHA-256, SHA-384 or SHA-512, then hash text or a file and copy the digest as HEX or Base64. No sign-up.
Hashing tools by OnlinePCApps since 2013
A hash is a short fingerprint of data that changes completely if one byte changes. The free online hash generator makes one for text or a file.
A software site often publishes a SHA-256 checksum next to a download. Hashing the file in the online hash generator and matching the result to that value shows whether the file arrived intact, which matters most for an installer or an image.
A hash makes a short, stable key for a piece of content. An online hash generator gives that fingerprint for deduplication, a cache-busting filename or a content address, since the same input always gives the same hash.
An API key, a config value or a sensitive file should not be sent to a server only to be hashed. The Web Crypto API runs in the browser, so the input stays on the device while the digest is computed.
In the online hash generator, type or paste text under Text Input. Or switch to File Upload and drag a file onto the box, or browse for one.
Choose MD5, SHA-1, SHA-256, SHA-384 or SHA-512 from the Algorithm list. SHA-256 is already selected. Then select the Generate button, which names the algorithm.
The online hash generator shows a HEX and a Base64 representation with the processed size in bytes. Select Copy beside the one needed. Clear starts over.
To hash is to turn data into a short fixed fingerprint. The online hash generator does that for text or a file with five algorithms.
Type or paste text into the online hash generator, or switch to File Upload and drag a file onto the box or browse for one. In Text Input, the Upload button also takes a .txt, .json, .js, .md, .csv or .xml file.
Choose MD5, SHA-1, SHA-256, SHA-384 or SHA-512 from the Algorithm list. SHA-256 is the default, and the button names the choice, like Generate SHA-256 Hash.
The hash is made when Generate is selected, not live as text is typed. Computing Hash shows while it runs, and Clear empties the panel for the next input.
The online hash generator shows the digest as HEX and as Base64 with a Copy button beside both, plus the processed size in bytes. A standard algorithm gives the same value as sha256sum or OpenSSL.
To generate a hash, to make a SHA-256 checksum and to get an MD5 of a file all name one job. A search for hash generator or SHA-256 online lands on the online hash generator above.
A hash is a short fixed fingerprint of data. The cases below show what the online hash generator gives and what it leaves out.
| The case | Result | What happens and why |
|---|---|---|
| Text Input | mode button | Type or paste text. Its Upload button takes .txt, .json, .js, .md, .csv and .xml files. |
| File Upload | mode button | Drag a file onto the box or browse. The raw bytes of the file are hashed. |
| Algorithm | list of five | MD5, SHA-1, SHA-256, SHA-384 or SHA-512, one at a time. |
| SHA-256 | the default | 64 hex characters, the 2026 standard in TLS, code signing and Bitcoin. |
| SHA-512 | larger margin | 128 hex characters, a wider security margin and a fit for 64-bit systems. |
| SHA-1 | broken | 40 hex characters, broken since 2017, fine only for a non-security checksum. |
| MD5 | broken | 32 hex characters, broken since 2004, fine only for a legacy or cache checksum. |
| Generate button | on click | The hash is made on click. It does not update live as text is typed. |
| HEX output | with Copy | The digest as hex, ready to compare with sha256sum or a published checksum. |
| Base64 output | with Copy | The same digest in Base64, a shorter string for an API or a header. |
| Processed size | in bytes | Shows how many bytes went into the hash, a quick check on file size. |
| HMAC | not supported | There is no key field. Use openssl dgst with -hmac or a language library. |
| Verify a checksum | no compare box | Compare the HEX value with the published one by eye or in a text diff. |
| Passwords | use a KDF | Never a plain hash. Use bcrypt, scrypt or Argon2id, which are slow and salted. |
| One-way | no reverse | A hash cannot be turned back into the input. It is a fingerprint, not encryption. |
| Where it runs | on the device | The hash is computed in the browser, so nothing is uploaded. |
How Hashing Works
A hash function turns any input, of any length, into a short fixed-length fingerprint. The same input always gives the same digest, while changing one byte gives a completely different one, the avalanche effect that makes a hash useful for spotting a change. A hash is one-way, so the input cannot be recovered from the digest, which is why hashing is not encryption and holds no secret on its own. The online hash generator offers five algorithms, MD5 and the SHA family from SHA-1 to SHA-512. It shows the digest as HEX and as Base64. The honest guidance matters most here. SHA-256 is the right choice for almost every job in 2026, the standard behind TLS, code signing and Bitcoin, set out in the NIST FIPS 180-4 specification. MD5 and SHA-1 are cryptographically broken, from 2004 and 2017, so they belong only on a non-security checksum or a match against a legacy value. A password is never stored as a plain hash, since a fast hash with no salt is easy to attack. It calls for a slow, salted routine like bcrypt, scrypt or Argon2id instead. The tool has no HMAC key field and no checksum compare box, so those jobs need OpenSSL or a short script. The references below define the standards.
The online hash generator and the command line both compute a hash. The trade is real, and the input is often a key or a private file.
| Point of comparison | This tool Online hash generator On the device | The command line A local terminal tool |
|---|---|---|
| Where the data goes | Kept on this device | Kept on the machine |
| Price and caps | Free with no sign-up | Free tier often capped |
| A file of many gigabytes | Suited to everyday files | Reads from disk |
| Script a checksum run | One input at a time here | sha256sum in a pipeline |
| Hex and Base64 output | Both shown with Copy | Hex only by default |
The command line wins for a file of many gigabytes or a checksum step inside a script, where sha256sum fits a pipeline. The online hash generator wins for a quick hash of text or a file with a choice of five algorithms, opened with no terminal. Online file tools and whether yours uploads covers where a web tool sends its input.
The text or the file is hashed inside the browser by the Web Crypto API, so the work is client-side and the input stays on the machine that opened it. Nothing is handed to a server to do it.
The input to a hash is often a password, an API key or a confidential file never meant for an outside server. A hosted hasher must send it up to a server to run, needless exposure when the browser does the same work locally.
All of these compute a hash. They differ from the online hash generator in effort, in cost and in setup.
The command line, OpenSSL and a code snippet all hash well, yet all of them need a terminal or a program. The online hash generator needs only a browser tab and shows HEX and Base64.
Keep these in mind to set the right algorithm.
SHA-256 is the right choice for almost every job in 2026, the standard behind TLS, code signing and Bitcoin. The online hash generator already has it selected. Reach for SHA-512 for a larger margin, and match MD5 or SHA-1 only to a legacy value.
Both have known collisions, MD5 since 2004 and SHA-1 since 2017, so an attacker can craft two inputs with the same hash. Use them in the online hash generator only for a non-security checksum or a cache key, never for a signature.
A password is never stored as a plain hash, since a fast hash with no salt is easy to attack. Use a slow, salted routine built for the job, like bcrypt, scrypt or Argon2id, rather than a raw SHA-256 from any online hash generator.
The online hash generator takes one text or one file at a time. A folder to checksum inside an automated build belongs to sha256sum or the desktop edition, which hashes an entire set in one pass.
Point it at a folder of files and every one is hashed to a checksum in a single run, saved as a list beside the source.
A file of many gigabytes is streamed from disk and hashed, past what a browser tab keeps in memory at once.
A saved step verifies a checksum inside a build, so a release is confirmed intact before it ships, with no manual paste.
No sign-up needed. Open the online hash generator, select an algorithm and hash text or a file.