The hash generator turns any text into a fixed-length hexadecimal digest using SHA-256, SHA-1 or MD5. Paste a password, a file body, an API payload or a random string and it computes the hash instantly, giving you the same fingerprint that a server, a checksum tool or a database column would produce for that exact input.
It runs entirely in your browser. The text is encoded to UTF-8 bytes and hashed in JavaScript on your own machine — nothing is uploaded, logged or sent to a server. That makes it safe for sensitive strings: turn off your network and the digests still compute exactly the same, because the algorithms are pure client-side code.
It is built for developers and testers who need a quick digest: verify a download checksum, reproduce a hash your backend generated, build a cache key, or compare two values without shipping them anywhere. Free forever, no signup, no file-size gate — pick an algorithm and copy the result.
SHA-256 produces a 64-character (256-bit) hex digest and is the current standard for integrity checks, content addressing and signatures. It has no known practical collision or preimage attacks, so it is the right choice whenever the hash needs to be trusted — checksums, tokens, or verifying that two payloads are identical.
SHA-1 (40 hex chars) and MD5 (32 hex chars) are older and cryptographically broken: collisions can be manufactured, so never use them for security. They remain useful for non-adversarial checksums, matching hashes from legacy systems, ETags, or deduplicating data where an attacker is not in the picture.
Your text is encoded to UTF-8 before hashing, so emoji, accents and non-Latin scripts hash correctly and match what most servers and languages produce. The output is lowercase hexadecimal by default; flip the Uppercase toggle if the system you are comparing against emits uppercase digests.
A hash is a one-way function: the same input always yields the same digest, and a single changed character produces a completely different one. There is no reverse operation — you cannot get the original text back from the hash, which is exactly why hashes are used for verification rather than storage.
Paste your text into the input, leave the algorithm on SHA-256 and copy the 64-character hex digest that appears. It is computed in your browser from the UTF-8 bytes of your text, so it matches sha256 output from OpenSSL, Node, Python's hashlib and most databases.
No. MD5 is cryptographically broken — collisions (two inputs with the same hash) can be produced cheaply, so it must never be used for passwords, signatures or anything an attacker could exploit. It is still fine as a fast non-security checksum, for example verifying an accidental corruption or matching a legacy value.
No. Hashing is one-way by design; the digest contains no recoverable copy of the input. People sometimes 'crack' short or common strings by hashing many guesses and comparing, but there is no formula that inverts a hash. To store recoverable data, encrypt it instead of hashing it.
No. Every digest is computed locally in your browser with pure JavaScript — nothing you paste is sent to a server, logged or stored. You can disconnect from the internet and the tool keeps working, which makes it safe for passwords and other sensitive strings.
Almost always an encoding or case difference. Make sure both tools hash the same UTF-8 bytes (trailing newlines and different character encodings change the result), and check whether the other tool emits uppercase hex — toggle Uppercase here to match. Given identical input bytes, SHA-256, SHA-1 and MD5 are deterministic and will agree.