CRC計算器

A CRC (Cyclic Redundancy Check) calculator computes checksum values used to detect errors in data transmission および storage. It applies polynomial division to your input data および 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 ...mat: HEX, DEC, OCT, or BIN. 4. The tool instantly computes all supported CRC variants および displays results in three tables: CRC-8, CRC-16, および CRC-32. 5. Click ... Copy button next to any result to copy it to your clipboard.

The tool supports over 60 CRC algorithms across three categories:

CRC-8: 20 algorithms including AUTOSAR, BLUETOOTH, CDMA2000, SMBUS, および more. CRC-16: 30 algorithms including ARC, KERMIT, MODBUS, XMODEM, USB, および more. CRC-32: 12 algorithms including ISO-HDLC (stおよびard CRC-32), BZIP2, ISCSI (CRC-32C), MPEG-2, および more.

Each algorithm row shows ... algorithm name, computed result, check value (... ... stおよびard test string "123456789"), polynomial, initial value, reflect input, reflect output, および XOR output.

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

ASCII mode: Enter any text. The tool converts it to bytes using UTF-8 encoding. 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 および contain only characters 0-9 および a-f (or A-F).