Checksum Calculator

Calculate CRC32, SHA-1, SHA-256, and SHA-512 checksums from typed text or an uploaded file.

If a file is selected, the calculator uses the file bytes. Otherwise it uses the pasted text.

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Checksum Calculator

Use typed text or upload a file to calculate common checksums for integrity checks, release notes, download verification, and support troubleshooting.

Your input is processed locally in your browser. Use these results for development, comparison, QA, and documentation workflows.