File Checksum Calculator
Calculate MD5, SHA-1, SHA-256, and SHA-512 checksums for any file to verify its integrity after download. Compare against the publisher's checksum to confirm the file is authentic and unmodified. Uses Web Crypto API — files never leave your browser.
Updated June 2026
- 1Upload your file
- 2Choose a hash algorithm
- 3Copy the checksum
Drop any file anywhere, click to browse
File is never uploaded — hashed entirely in your browser
How to Use File Checksum Calculator
- 1
Upload your file
Drag and drop any file into the upload area, or click to browse and select it.
- 2
Choose a hash algorithm
Pick MD5, SHA-1, SHA-256, or another supported algorithm.
- 3
Copy the checksum
Compare it against the publisher's value to verify the file wasn't corrupted or tampered with.
Frequently Asked Questions
Is the file uploaded to a server to calculate the checksum?▼
Which hash algorithms are supported?▼
How do I use this to verify a downloaded file?▼
What is the difference between MD5 and SHA-256?▼
Is there a file size limit?▼
How to use File Checksum Calculator
- 1
Upload your file
Drag and drop any file into the upload area, or click to browse and select it.
- 2
Choose a hash algorithm
Pick MD5, SHA-1, SHA-256, or another supported algorithm.
- 3
Copy the checksum
Compare it against the publisher's value to verify the file wasn't corrupted or tampered with.
Frequently asked questions
Everything you need to know about file checksum calculator.
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