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Hash Calculator

Calculate and compare text or file hashes with 25 algorithms in your browser — free, with no sign-up, and your files and text never leave your device. Choose an algorithm, enter text or select a file, then copy or export the digest.

Input source

Empty input is valid. Spaces and Unicode are preserved; no BOM is added.

Hash algorithms
Other algorithms

1 / 8 selected

SHA-2
SHA-3
Keccak
BLAKE
SHAKE
Compatibility
Checksums
More settings

Results

Choose Calculate to get a hash of your input.

Compare with expected

Enter an expected value to compare.

Text, files, keys and hashes stay in this tab. Nothing you enter is uploaded or saved.

Questions

How long is the result?

SHA-256 produces 32 bytes: 64 hexadecimal characters. Base64 represents the same digest bytes. Choose from 25 algorithms, including SHA-2, SHA-3, Keccak, BLAKE, SHAKE and checksums. Calculate up to eight in one pass.

What input is hashed?

Input source: Text / Files / Encoded bytes. Empty input is valid. Spaces and Unicode are preserved; no BOM is added. Text encoding: UTF-8, UTF-16LE, UTF-16BE; Line endings: LF / CRLF. Any file type is accepted. The original bytes are hashed, not extracted document text or the filename. Files are processed one at a time in 1 MiB chunks.

How does verification work?

Select the expected algorithm and encoding explicitly. Comparison uses decoded bytes and checks the exact length. Changing output format or expected value does not reread a file.

Are my inputs saved or uploaded?

Text, files, keys and hashes stay in this tab. Nothing you enter is uploaded or saved.

Is this tool free?

Yes. This tool is free, with no sign-up and no daily limits.

Do I need an account?

No. You can use this tool without an account.

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