Generate SHA hashes and checksums from text or a file in seconds. Compare fingerprints, verify downloads, and keep every byte private on your device.
A hash is a repeatable digital fingerprint. The same input always produces the same result, while even a tiny change creates a dramatically different value. Paste text or choose a local file, select an algorithm, and compare the result with an existing checksum when you need to verify integrity.
Hash a local file and compare the result with the checksum published by its provider.
SHA-256 is a strong, widely supported choice for integrity checks and most modern workflows.
A cryptographic hash is one-way. It cannot be decrypted back into the original input.
Answers about hash algorithms, checksums, file privacy and choosing the right output.
You can generate SHA-1, SHA-256, SHA-384, SHA-512, CRC32 and FNV-1a hashes or checksums.
No. Hashes are calculated locally in your browser, so your text and files stay on your device.
Cryptographic hashes are one-way functions and are not designed to be reversed.
SHA-256 is a strong, widely supported default for file integrity checks. SHA-1 is included only for legacy compatibility, while CRC32 and FNV-1a are non-cryptographic checksums.
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