b2KIT

File Checksum Calculator

Compute MD5, SHA-1, SHA-256, and SHA-512 checksums to verify file integrity and detect tampering.

All checksums are computed locally in your browser using the Web Crypto API. No files are uploaded to any server. Paste an expected hash in the verify field to compare against computed hashes.

How to Use File Checksum Calculator

  1. 1

    Upload a file

    Select the file you want to generate a checksum for.

  2. 2

    Choose algorithm

    Select MD5, SHA-1, SHA-256, or another hash algorithm.

  3. 3

    Copy the hash

    Click copy to grab the checksum value for verification.

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