Cryptography
SHA Hash Calculator
Compute SHA-256, SHA-384, SHA-512, or legacy SHA-1 digests from text or a local file. Output Hex and Base64 in your browser only.
Runs entirely in your browser; input is not sent to our servers.
Messages, keys, passwords, plaintext, ciphertext, and files are never stored in
localStorage, history, or analytics payloads.
Max file size is limited because Web Crypto digest is not streaming.
Digest (Hex)
Digest (Base64)
FAQ
Is hashing the same as encryption?
No. A hash is one-way: you cannot recover the original message from the digest. Encryption is reversible with the correct key. Use hashes for integrity checks and fingerprints, not for hiding recoverable data.
Why is SHA-1 marked legacy?
SHA-1 collision attacks are practical; do not use it for signatures, certificates, or password storage. Prefer SHA-256 or stronger. This tool still offers SHA-1 only for verifying old digests.
Does this upload my file or text?
No. Digests are computed with Web Crypto in your browser. Nothing is sent to the server for hashing.
Sources
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