Hash Generator (SHA)
Generate SHA-1, SHA-256 and SHA-512 hashes of any text in your browser using the Web Crypto API.
A cryptographic hash turns any text into a fixed-length fingerprint, used to verify integrity and compare data without storing the original. Hash Generator computes the MD5, SHA-1, SHA-256, SHA-384 or SHA-512 hash of your text in your browser (the SHA family through the built-in Web Crypto), so nothing is sent anywhere.
How to use hash generator (sha)
- 1. Paste your text.
- 2. Pick the algorithm — SHA-256 is selected by default — and generate.
- 3. Copy the hash.
When to use Hash Generator (SHA)
Verify integrity
Generate a checksum to confirm text or data hasn't changed.
Compare values
Hash two inputs to check whether they're identical without revealing them.
Developer testing
Produce known hashes while building or debugging.
Hashing is one-way
A hash can't be reversed back into the original text — that's the point. It's for verification and fingerprinting, not encryption. Note that SHA-1 is considered weak for security-critical use; prefer SHA-256 or SHA-512 where integrity really matters.
Which algorithm to choose
SHA-256 is the default choice for checksums and integrity checks today. SHA-384 and SHA-512 are longer variants. MD5 and SHA-1 are still used to compare files and in older systems, but they are broken for security purposes — never use them to protect passwords. For storing passwords, use a dedicated slow algorithm such as bcrypt or Argon2 instead of any of these.
Why my hash doesn't match
A hash changes completely if a single byte changes — including an invisible trailing space or line break. Text is hashed as UTF-8, the standard used by command-line tools like sha256sum, so the same text gives the same hash; but pasting from a file may add or remove a final newline, which produces a different result.
Frequently asked questions
Can I get the original text back from a hash?
No — hashing is one-way by design. It fingerprints data; it doesn't encrypt it.
Which algorithm should I use?
Prefer SHA-256 or SHA-512 for anything security-related; SHA-1 is included for compatibility but is considered weak.
Is my text uploaded?
No — hashes are computed in your browser with the Web Crypto API.