✓ Runs locally in your browser

File Checksum

Verify file integrity with a local SHA-256 or SHA-512 digest without uploading the file.

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About this tool

What is File Checksum?

File Checksum calculates a SHA-256 or SHA-512 digest from the exact bytes of a local file.

Three simple steps

How to use File Checksum

  1. 01

    Choose the file whose integrity value you need.

  2. 02

    Select the checksum algorithm specified by the source or download page.

  3. 03

    Calculate and compare the hexadecimal digest character by character.

Common questions

File Checksum FAQ

Why does my checksum differ from the published value?

The file bytes, selected algorithm or published reference may differ. Even a one-byte change produces a different digest.

Is File Checksum private to use?

Yes. Files and structured data are processed locally in your browser and are not uploaded to Toolnera.