Калькулятор CRC

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

Инструмент поддерживает over 60 CRC algorithms across three categories:

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

Each algorithm row shows ... algorithm name, computed result, check value (для ... stиard test строку "123456789"), polynomial, initial value, reflect input, reflect output, и XOR output.

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

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