Trình tính toán mã CRC

A CRC (Cyclic Redundancy Check) calculator computes checksum values used to detect errors in data transmission và storage. It applies polynomial division to your input data và produces a fixed-size result (checksum) that can verify data integrity.

1. Choose input type: ASCII text or hexadecimal bytes. 2. Enter your data in ... text area. 3. Select output chomat: HEX, DEC, OCT, or BIN. 4. The tool instantly computes all supported CRC variants và displays results in three tables: CRC-8, CRC-16, và CRC-32. 5. Click ... Copy button next to any result to copy it to your clipboard.

Công cụ hỗ trợ over 60 CRC algorithms across three categories:

CRC-8: 20 algorithms bao gồm AUTOSAR, BLUETOOTH, CDMA2000, SMBUS, và more. CRC-16: 30 algorithms bao gồm ARC, KERMIT, MODBUS, XMODEM, USB, và more. CRC-32: 12 algorithms bao gồm ISO-HDLC (stvàard CRC-32), BZIP2, ISCSI (CRC-32C), MPEG-2, và more.

Each algorithm row shows ... algorithm name, computed result, check value (cho ... stvàard test chuỗi "123456789"), polynomial, initial value, reflect input, reflect output, và XOR output.

The Check column shows ... expected CRC result cho ... stvàard test chuỗi "123456789". If you enter "123456789" as ASCII input, your computed result should match ... check value. This is useful cho verifying that a specific CRC algorithm is producing correct results.

ASCII mode: Enter any text. The tool converts it to bytes using UTF-8 mã hóa. HEX mode: Enter hexadecimal byte pairs separated by spaces or continuous. For example: "48 65 6C 6C 6F" or "48656C6C6F". Hex input must have even length và contain only characters 0-9 và a-f (or A-F).