Calculate CRC-32B checksums online

Create your hashes online

Create a CRC-32B checksum online from your password or data. You can also upload a file to build the CRC32B hash and verify your data later with the checksum. You can find here another tool to create CRC-32 checksums online.

CRC-32B converter

Or enter the text you want to convert to a CRC-32B hash:
Or enter the URL of the file you want to create a CRC32B hash from:
Or select a file from your cloud storage for a CRC32B conversion:

Choose from Google Drive

Optional settings

Shared secret key used for the HMAC variant (optional):
Shared secret key used for the HMAC variant (optional):

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The CRC32B algorithm is basically used of zip and png, compared to the CRC32 online calculator.

The input string encoding is expected to be in UTF-8. Different encoding will result in different hash values. Unicode is considered best practices.