Calculate sha256 checksum of text in browser

Hash Generator is an online digest tool that supports four mainstream hash algorithms: MD5, SHA1, SHA256 and SHA512. Hash functions map arbitrary-length input to a fixed-length digest string; they are one-way and collision-resistant, and are widely used in password storage, data integrity checks, file fingerprints and digital signatures.

Step 1 — type the text you want to hash in the input area, or click "Sample" to load an example. Step 2 — the tool computes and shows all four digests in real time, together with the length of each result (for example SHA256 is 64 characters). Step 3 — pick lower-case or upper-case output in the toolbar (lower case is the most common; upper case is easier to read in some scenarios). Step 4 — press the "Copy" button next to any digest to place it on the clipboard.

Back-end developers test password-hashing logic in signup / login modules; software vendors compute SHA256 fingerprints of release artifacts so users can verify integrity; DBAs generate row fingerprints during data migration for comparison; API providers debug HMAC results in signature algorithms; security researchers analyse the hashes of samples to confirm uniqueness.

MD5 produces 128 bits (32 hex chars), SHA1 160 bits (40 chars), SHA256 256 bits (64 chars) and SHA512 512 bits (128 chars). The tool is built on crypto-js and outputs the digest in hexadecimal (hex). MD5 and SHA1 are known to have collision attacks and should not be used for security signatures — SHA256 is the modern safe default. The digest here is unsalted plain text; for real password storage use a dedicated password hash such as bcrypt or argon2.

Hash computation runs entirely in your browser. The input is never uploaded, so you can safely process passwords, keys or tokens.