CRC Calculator
One record per line; each line is read as UTF-8 text, a hex byte string (48 65 6C) or decimal bytes (72,101,108) depending on the input format.
Input format:
Algorithm:
Output format:
Byte-by-byte steps:
Max bytes per line:
Calculation Result
Download CSV
| No. | Input data | Bytes | Algorithm | Checksum | Verification | Byte-by-byte steps |
|---|
Introduction to the tool and how to use it
Online CRC checksum calculator supporting eight standard algorithms: CRC-8, CRC-8/MAXIM, CRC-16/ARC, CRC-16/CCITT-FALSE, CRC-16/XMODEM, CRC-16/MODBUS, CRC-32, CRC-32C. Enter one data item per line; it can be read as UTF-8 text, a hex byte string, or a decimal byte sequence. Enter an expected value to verify line by line, or expand the byte-by-byte calculation; results can be exported as CSV.
How to use
- Paste one data item per line (text / hex / decimal bytes).
- Choose input format, algorithm, output format, and other parameters.
- Click Run.
- Copy or export the checksum; you can enter an expected check value to compare.
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