Checksum Calculator
Calculate CRC32, MD5, SHA-1/256/384/512, and SHA3-256/512 checksums for text or a file, and compare them against an expected value.
Checksum lookup
Result
Enter some text
Compare checksum
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How to use
Choose text input or file upload.
Paste text or select a file, and checksums for every algorithm are calculated at once.
To verify a download, paste the checksum published by the source into the "Compare checksum" box to check for a match.
자주 묻는 질문
Q1. Is my uploaded file sent to a server?
No. The file is read entirely in your browser to compute checksums; it's never uploaded to a server. This makes it safe to check large files too.
Q2. Which checksum algorithms are supported?
CRC32, MD5, SHA-1, SHA-256, SHA-384, SHA-512, SHA3-256, and SHA3-512 are all calculated at once, since different sources publish different algorithms.
Q3. Why do I need a checksum?
A file can get corrupted during download, or a distribution server could be compromised — either way the checksum would no longer match the original. Comparing the checksum published on the download page against the one you compute confirms the file is intact.
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