Coti Lab
Checksum Calculator
Tools / Development
#

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

1

Choose text input or file upload.

2

Paste text or select a file, and checksums for every algorithm are calculated at once.

3

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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